How Can I Catch Error "serial port /dev/rfcomm0 closed unexpectedly"

General
1

Hello,
(raspberry pi 2b, node-red v0.19.5)
I have a battery operated bluetooth thermometer (testing wine temperature) that I do not use very often... (or too often, I don't know). I switch it off when I do not need it to preserve the battery. But when I do I get the "serial port /dev/rfcomm0 closed unexpectedly" error (every 10-15 seconds or so) in my debug window. I would like to get rid of this, since I know the port is closed, it clutters my debugging windows.

Once, I get this repeated message, the node seems to try to reconnect and gives invalid status toggling from node-red:common.status.not-connected to node-red:common.status.connected. (as a bonus). Therefore, I cannot use the status to release the device.

I tried to catch the error with the "Catch node" without much success. (

If I could catch the error I could just automatically release the /dev/rfcomm0 .. then I would get only one message, (File not found)...
I try to include the flow, but most of it does not apply to the problem... Only the Serial node is of the matter.
How can I catch the error : "serial port /dev/rfcomm0 closed unexpectedly" ??
thanks

    {
        "id": "dd0b96ba.ca1d08",
        "type": "serial in",
        "z": "41acd98a.5798c8",
        "name": "Thermo",
        "serial": "6710935.2e06d6c",
        "x": 160,
        "y": 120,
        "wires": [
            [
                "c4dde817.7769a8"
            ]
        ]
    },
    {
        "id": "c4dde817.7769a8",
        "type": "function",
        "z": "41acd98a.5798c8",
        "name": "Temperature",
        "func": "message1 = {};\nmessage2 = {};\nmessage3 = msg.payload.port\n\n\nmsg.string = msg.payload.split(\" \");\n\nmessage1.payload=msg.string[0];\n\nmessage2.payload=msg.string[2];\n\n\n\n return [message1,message2,message3];// celsius, fahreigh, port\n",
        "outputs": 3,
        "noerr": 0,
        "x": 350,
        "y": 220,
        "wires": [
            [
                "492de263.bde9bc"
            ],
            [
                "3b8afbff.0cbbc4"
            ],
            [
                "9d589ba8.2d7c38"
            ]
        ]
    },
    {
        "id": "492de263.bde9bc",
        "type": "ui_gauge",
        "z": "41acd98a.5798c8",
        "name": "",
        "group": "593a5a67.b54d74",
        "order": 2,
        "width": "6",
        "height": "6",
        "gtype": "gage",
        "title": "Température °C",
        "label": "C",
        "format": "{{value | number:1 }} °C",
        "min": "-40",
        "max": "100",
        "colors": [
            "#0000ff",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 560,
        "y": 160,
        "wires": []
    },
    {
        "id": "9d589ba8.2d7c38",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "x": 550,
        "y": 280,
        "wires": []
    },
    {
        "id": "3b8afbff.0cbbc4",
        "type": "ui_gauge",
        "z": "41acd98a.5798c8",
        "name": "",
        "group": "593a5a67.b54d74",
        "order": 3,
        "width": "6",
        "height": "6",
        "gtype": "gage",
        "title": "Température °F",
        "label": "F",
        "format": "{{value | number:1 }} °F",
        "min": "-40",
        "max": "212",
        "colors": [
            "#0000ff",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 560,
        "y": 220,
        "wires": []
    },
    {
        "id": "88f3bc64.99aa4",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "catch thermo",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 370,
        "y": 320,
        "wires": []
    },
    {
        "id": "6baa66f0.277508",
        "type": "function",
        "z": "41acd98a.5798c8",
        "name": "status",
        "func": "msg1={};\nmsg2={};\nmsg2.payload = msg.status.text;\nif (msg.status.text== \"node-red:common.status.not-connected\"){\nmsg1.payload = \"Débranché\";\n\n}\nif (msg.status.text== \"node-red:common.status.connected\"){\nmsg1.payload = \"Branché\";    \n}\n\n return [msg1,msg2];\n",
        "outputs": 2,
        "noerr": 0,
        "x": 370,
        "y": 580,
        "wires": [
            [
                "1b22b754.7158c9",
                "691bb477.f27a0c"
            ],
            [
                "93318ebd.7ae1d"
            ]
        ]
    },
    {
        "id": "32016656.df368a",
        "type": "status",
        "z": "41acd98a.5798c8",
        "name": "",
        "scope": [
            "dd0b96ba.ca1d08"
        ],
        "x": 180,
        "y": 580,
        "wires": [
            [
                "7ebcf248.fa907c",
                "6baa66f0.277508"
            ]
        ]
    },
    {
        "id": "1b22b754.7158c9",
        "type": "ui_text",
        "z": "41acd98a.5798c8",
        "group": "593a5a67.b54d74",
        "order": 1,
        "width": "1",
        "height": "1",
        "name": "Status Thermomètre",
        "label": "",
        "format": "{{msg.payload}}",
        "layout": "row-spread",
        "x": 580,
        "y": 640,
        "wires": []
    },
    {
        "id": "7ebcf248.fa907c",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "raw sta",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 380,
        "y": 520,
        "wires": []
    },
    {
        "id": "691bb477.f27a0c",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "statusThermo",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 560,
        "y": 580,
        "wires": []
    },
    {
        "id": "1aeb9fbb.6133",
        "type": "ui_button",
        "z": "41acd98a.5798c8",
        "name": "ThermoBlueToothButton",
        "group": "593a5a67.b54d74",
        "order": 2,
        "width": 0,
        "height": 0,
        "passthru": false,
        "label": "{{msg.label}}",
        "tooltip": "",
        "color": "",
        "bgcolor": "{{background}}",
        "icon": "bluetooth",
        "payload": "",
        "payloadType": "str",
        "topic": "",
        "x": 690,
        "y": 440,
        "wires": [
            [
                "56b35213.9cee2c"
            ]
        ]
    },
    {
        "id": "45213299.0cf75c",
        "type": "comment",
        "z": "41acd98a.5798c8",
        "name": "force connect",
        "info": "was \nsudo rfcomm connect hci0 20:16:11:02:41:36  1",
        "x": 770,
        "y": 380,
        "wires": []
    },
    {
        "id": "56b35213.9cee2c",
        "type": "delay",
        "z": "41acd98a.5798c8",
        "name": "",
        "pauseType": "delay",
        "timeout": "500",
        "timeoutUnits": "milliseconds",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "x": 930,
        "y": 440,
        "wires": [
            [
                "1aab4a13.579b36",
                "5b5aa25e.df8dbc"
            ]
        ]
    },
    {
        "id": "1aab4a13.579b36",
        "type": "exec",
        "z": "41acd98a.5798c8",
        "command": "sudo /usr/bin/rfcomm release rfcomm0",
        "addpay": false,
        "append": "",
        "useSpawn": "false",
        "timer": "",
        "oldrc": false,
        "name": "ReleaseRF",
        "x": 1130,
        "y": 440,
        "wires": [
            [
                "c3b142ba.a0411"
            ],
            [],
            []
        ]
    },
    {
        "id": "6eeca646.7a43e8",
        "type": "comment",
        "z": "41acd98a.5798c8",
        "name": "RFcomm (bluetooth) port ",
        "info": "la clef des commandes est \nsudo rfcomm bind 0 20:16:10:28:41:49 1 \nsudo rfcomm bind 2 20:16:11:02:41:36 1\nstty  -F /dev/rfcomm0 9600\nstty  -F /dev/rfcomm2 9600\n2 divan\n0 thermo\nto release\nsudo rfcomm release rfcomm0\nsudo rfcomm release rfcomm2\n\nsudo rfcomm   ' gets the status'\n",
        "x": 1170,
        "y": 380,
        "wires": []
    },
    {
        "id": "5b5aa25e.df8dbc",
        "type": "change",
        "z": "41acd98a.5798c8",
        "name": "",
        "rules": [
            {
                "t": "set",
                "p": "background",
                "pt": "msg",
                "to": "ORANGE",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "label",
                "pt": "msg",
                "to": "Releasing RF",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 860,
        "y": 620,
        "wires": [
            [
                "1aeb9fbb.6133"
            ]
        ]
    },
    {
        "id": "85059361.e215d",
        "type": "change",
        "z": "41acd98a.5798c8",
        "name": "",
        "rules": [
            {
                "t": "set",
                "p": "background",
                "pt": "msg",
                "to": "#3FADB5",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "label",
                "pt": "msg",
                "to": "Force Connect",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1480,
        "y": 720,
        "wires": [
            [
                "1aeb9fbb.6133"
            ]
        ]
    },
    {
        "id": "5af59b8.da5fa64",
        "type": "exec",
        "z": "41acd98a.5798c8",
        "command": "/bin/stty  -F /dev/rfcomm0 9600",
        "addpay": false,
        "append": "",
        "useSpawn": "false",
        "timer": "",
        "oldrc": false,
        "name": "Set Speed",
        "x": 1470,
        "y": 660,
        "wires": [
            [
                "85059361.e215d"
            ],
            [],
            []
        ]
    },
    {
        "id": "172f4b2f.f45405",
        "type": "delay",
        "z": "41acd98a.5798c8",
        "name": "",
        "pauseType": "delay",
        "timeout": "18",
        "timeoutUnits": "seconds",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "x": 1460,
        "y": 580,
        "wires": [
            [
                "5af59b8.da5fa64"
            ]
        ]
    },
    {
        "id": "fea883d8.52878",
        "type": "change",
        "z": "41acd98a.5798c8",
        "name": "",
        "rules": [
            {
                "t": "set",
                "p": "background",
                "pt": "msg",
                "to": "#87A980",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "label",
                "pt": "msg",
                "to": "Connecting...",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1480,
        "y": 520,
        "wires": [
            [
                "1aeb9fbb.6133",
                "172f4b2f.f45405"
            ]
        ]
    },
    {
        "id": "60287713.ff6db8",
        "type": "exec",
        "z": "41acd98a.5798c8",
        "command": "sudo rfcomm bind 0 20:16:10:28:41:49 1",
        "addpay": false,
        "append": "",
        "useSpawn": "false",
        "timer": "",
        "oldrc": false,
        "name": "Bind",
        "x": 1450,
        "y": 440,
        "wires": [
            [
                "fea883d8.52878"
            ],
            [],
            []
        ]
    },
    {
        "id": "c3b142ba.a0411",
        "type": "delay",
        "z": "41acd98a.5798c8",
        "name": "",
        "pauseType": "delay",
        "timeout": "3",
        "timeoutUnits": "seconds",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "x": 1300,
        "y": 440,
        "wires": [
            [
                "60287713.ff6db8"
            ]
        ]
    },
    {
        "id": "5bfe43ac.0ed09c",
        "type": "catch",
        "z": "41acd98a.5798c8",
        "name": "",
        "scope": [
            "dd0b96ba.ca1d08"
        ],
        "x": 150,
        "y": 320,
        "wires": [
            [
                "88f3bc64.99aa4"
            ]
        ],
        "outputLabels": [
            "this.error"
        ]
    },
    {
        "id": "93318ebd.7ae1d",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "release",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 460,
        "y": 700,
        "wires": []
    },
    {
        "id": "385edac7.e8e466",
        "type": "delay",
        "z": "41acd98a.5798c8",
        "name": "",
        "pauseType": "delay",
        "timeout": "4",
        "timeoutUnits": "seconds",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "x": 1260,
        "y": 1020,
        "wires": [
            [
                "64ffe13e.b069e"
            ]
        ]
    },
    {
        "id": "4ff18b7c.45c4e4",
        "type": "exec",
        "z": "41acd98a.5798c8",
        "command": "sudo /usr/bin/rfcomm release rfcomm0",
        "addpay": false,
        "append": "",
        "useSpawn": "false",
        "timer": "",
        "oldrc": true,
        "name": "ReleaseRF",
        "x": 870,
        "y": 940,
        "wires": [
            [
                "d2962863.a1c3f8"
            ],
            [],
            [
                "d4f40c9f.3cfe2",
                "d2962863.a1c3f8"
            ]
        ]
    },
    {
        "id": "d2962863.a1c3f8",
        "type": "change",
        "z": "41acd98a.5798c8",
        "name": "",
        "rules": [
            {
                "t": "set",
                "p": "background",
                "pt": "msg",
                "to": "ORANGE",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "label",
                "pt": "msg",
                "to": "Disconnecting..",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1060,
        "y": 1020,
        "wires": [
            [
                "385edac7.e8e466",
                "9f805377.b288"
            ]
        ]
    },
    {
        "id": "9f805377.b288",
        "type": "ui_button",
        "z": "41acd98a.5798c8",
        "name": "ThermoDisconnect",
        "group": "593a5a67.b54d74",
        "order": 2,
        "width": 0,
        "height": 0,
        "passthru": false,
        "label": "{{msg.label}}",
        "tooltip": "",
        "color": "",
        "bgcolor": "{{background}}",
        "icon": "bluetooth",
        "payload": "",
        "payloadType": "str",
        "topic": "",
        "x": 650,
        "y": 940,
        "wires": [
            [
                "4ff18b7c.45c4e4"
            ]
        ]
    },
    {
        "id": "64ffe13e.b069e",
        "type": "change",
        "z": "41acd98a.5798c8",
        "name": "",
        "rules": [
            {
                "t": "set",
                "p": "background",
                "pt": "msg",
                "to": "RED",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "label",
                "pt": "msg",
                "to": "Disconnect",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1440,
        "y": 1020,
        "wires": [
            [
                "9f805377.b288"
            ]
        ]
    },
    {
        "id": "d4f40c9f.3cfe2",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 1060,
        "y": 960,
        "wires": []
    },
    {
        "id": "6710935.2e06d6c",
        "type": "serial-port",
        "z": "",
        "serialport": "/dev/rfcomm0",
        "serialbaud": "9600",
        "databits": "8",
        "parity": "none",
        "stopbits": "1",
        "newline": "\\n",
        "bin": "false",
        "out": "char",
        "addchar": false,
        "responsetimeout": ""
    },
    {
        "id": "593a5a67.b54d74",
        "type": "ui_group",
        "z": "",
        "name": "Thermomètre numérique",
        "tab": "2c903b25.29ec24",
        "disp": false,
        "width": "6",
        "collapse": false
    },
    {
        "id": "2c903b25.29ec24",
        "type": "ui_tab",
        "z": "",
        "name": "Thermomètre digital",
        "icon": "fa-thermometer",
        "order": 12,
        "disabled": false,
        "hidden": false
    }
]
2

For future reference if you select a node or nodes then use the Export feature then only the selected nodes will be exported.

3

Hi Colin,
thanks for your comment.
Here are only the selected nodes (I think) ....
I though being able to connect the bluetooth to the tty needed to be included...
Still : The question remains....
"How do you catch such an error in a flow so you can re-act on them ?"

    {
        "id": "dd0b96ba.ca1d08",
        "type": "serial in",
        "z": "41acd98a.5798c8",
        "name": "Thermo",
        "serial": "6710935.2e06d6c",
        "x": 160,
        "y": 120,
        "wires": [
            [
                "c4dde817.7769a8"
            ]
        ]
    },
    {
        "id": "c4dde817.7769a8",
        "type": "function",
        "z": "41acd98a.5798c8",
        "name": "Temperature",
        "func": "message1 = {};\nmessage2 = {};\nmessage3 = msg.payload.port\n\n\nmsg.string = msg.payload.split(\" \");\n\nmessage1.payload=msg.string[0];\n\nmessage2.payload=msg.string[2];\n\n\n\n return [message1,message2,message3];// celsius, fahreigh, port\n",
        "outputs": 3,
        "noerr": 0,
        "x": 350,
        "y": 220,
        "wires": [
            [
                "492de263.bde9bc"
            ],
            [
                "3b8afbff.0cbbc4"
            ],
            [
                "9d589ba8.2d7c38"
            ]
        ]
    },
    {
        "id": "492de263.bde9bc",
        "type": "ui_gauge",
        "z": "41acd98a.5798c8",
        "name": "",
        "group": "593a5a67.b54d74",
        "order": 2,
        "width": "6",
        "height": "6",
        "gtype": "gage",
        "title": "Température °C",
        "label": "C",
        "format": "{{value | number:1 }} °C",
        "min": "-40",
        "max": "100",
        "colors": [
            "#0000ff",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 560,
        "y": 160,
        "wires": []
    },
    {
        "id": "9d589ba8.2d7c38",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "x": 550,
        "y": 280,
        "wires": []
    },
    {
        "id": "3b8afbff.0cbbc4",
        "type": "ui_gauge",
        "z": "41acd98a.5798c8",
        "name": "",
        "group": "593a5a67.b54d74",
        "order": 3,
        "width": "6",
        "height": "6",
        "gtype": "gage",
        "title": "Température °F",
        "label": "F",
        "format": "{{value | number:1 }} °F",
        "min": "-40",
        "max": "212",
        "colors": [
            "#0000ff",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 560,
        "y": 220,
        "wires": []
    },
    {
        "id": "88f3bc64.99aa4",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "catch thermo",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 370,
        "y": 320,
        "wires": []
    },
    {
        "id": "5bfe43ac.0ed09c",
        "type": "catch",
        "z": "41acd98a.5798c8",
        "name": "",
        "scope": [
            "dd0b96ba.ca1d08"
        ],
        "x": 150,
        "y": 320,
        "wires": [
            [
                "88f3bc64.99aa4"
            ]
        ],
        "outputLabels": [
            "this.error"
        ]
    },
    {
        "id": "32016656.df368a",
        "type": "status",
        "z": "41acd98a.5798c8",
        "name": "",
        "scope": [
            "dd0b96ba.ca1d08"
        ],
        "x": 180,
        "y": 580,
        "wires": [
            [
                "7ebcf248.fa907c",
                "6baa66f0.277508"
            ]
        ]
    },
    {
        "id": "6baa66f0.277508",
        "type": "function",
        "z": "41acd98a.5798c8",
        "name": "status",
        "func": "msg1={};\nmsg2={};\nmsg2.payload = msg.status.text;\nif (msg.status.text== \"node-red:common.status.not-connected\"){\nmsg1.payload = \"Débranché\";\n\n}\nif (msg.status.text== \"node-red:common.status.connected\"){\nmsg1.payload = \"Branché\";    \n}\n\n return [msg1,msg2];\n",
        "outputs": 2,
        "noerr": 0,
        "x": 370,
        "y": 580,
        "wires": [
            [
                "1b22b754.7158c9",
                "691bb477.f27a0c"
            ],
            [
                "93318ebd.7ae1d"
            ]
        ]
    },
    {
        "id": "7ebcf248.fa907c",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "raw sta",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 380,
        "y": 520,
        "wires": []
    },
    {
        "id": "691bb477.f27a0c",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "statusThermo",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 560,
        "y": 580,
        "wires": []
    },
    {
        "id": "1b22b754.7158c9",
        "type": "ui_text",
        "z": "41acd98a.5798c8",
        "group": "593a5a67.b54d74",
        "order": 1,
        "width": "1",
        "height": "1",
        "name": "Status Thermomètre",
        "label": "",
        "format": "{{msg.payload}}",
        "layout": "row-spread",
        "x": 580,
        "y": 640,
        "wires": []
    },
    {
        "id": "93318ebd.7ae1d",
        "type": "debug",
        "z": "41acd98a.5798c8",
        "name": "release",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 460,
        "y": 700,
        "wires": []
    },
    {
        "id": "6710935.2e06d6c",
        "type": "serial-port",
        "z": "",
        "serialport": "/dev/rfcomm0",
        "serialbaud": "9600",
        "databits": "8",
        "parity": "none",
        "stopbits": "1",
        "newline": "\\n",
        "bin": "false",
        "out": "char",
        "addchar": false,
        "responsetimeout": ""
    },
    {
        "id": "593a5a67.b54d74",
        "type": "ui_group",
        "z": "",
        "name": "Thermomètre numérique",
        "tab": "2c903b25.29ec24",
        "disp": false,
        "width": "6",
        "collapse": false
    },
    {
        "id": "2c903b25.29ec24",
        "type": "ui_tab",
        "z": "",
        "name": "Thermomètre digital",
        "icon": "fa-thermometer",
        "order": 12,
        "disabled": false,
        "hidden": false
    }
]
4

Assuming that is coming from the serial node itself rather than one of your debug nodes (you should be able to see the node name above the error) then I would have expected that to be caught by a Catch node. You say you didn't have much success with a Catch node, do you mean you got nothing from it?

5

Or maybe the status node will catch it. (But basically you are saying it would be better if the error was only reported the first time?)

6

That is right. I set up the catch node to point to use only the serial node.

7

The error has a red vertical bar attached to it and does not refer to a node.
When the temporary bluetooth device is disconnected, the error occurs and repeats itself every 14-20 seconds. Once this error occurs, the status node changes from connected to not connected although it is not connected.
If I could catch this error message in a flow, I could then release the device. This would have the effect of stopping the invalid toggling of the status by giving only one error message (file not found).
I hope this is a bit clearer.