# Node-Red will no longer start with uncaught exception

**URL:** <https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922>\
**Category:** General\
**Created:** [29 December 2022 23:53 UTC](https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922 "2022-12-29T23:53:55Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![shimbone](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/shimbone/32/24815_2.png) [@shimbone](https://discourse.nodered.org/u/shimbone)\
**Post date:** [29 December 2022 23:53 UTC](https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922/1 "2022-12-29T23:53:55Z")

</div>

Log file is below. It looks like it is related to MQTT, however, I have changed nothing with my broker and can connect to it just fine with other clients.

I was, however, messing with Roomba configurations from: node-red-contrib-roomba980-fw2

Whatever has happened has me dead in the water. Using an older backed up flow file that was working fine yesterday doesn't seem to make a difference. Any suggestions?!

```auto
29 Dec 15:39:53 - [info]
Welcome to Node-RED
===================
29 Dec 15:39:53 - [info] Node-RED version: v3.0.2
29 Dec 15:39:53 - [info] Node.js version: v18.9.1
29 Dec 15:39:53 - [info] Linux 5.10.103-v7l+ arm LE
29 Dec 15:39:55 - [info] Loading palette nodes
SmartthingsConfigNode
Creating directory: /home/pi/.node-red/smartthings/context/

29 Dec 15:39:59 - [info] Dashboard version 3.2.3 started at /ui
29 Dec 15:40:00 - [info] Settings file : /home/pi/.node-red/settings.js
29 Dec 15:40:00 - [info] HTTP Static : /home/pi/webroot > /
29 Dec 15:40:00 - [info] Context store : 'memory' [module=memory]
29 Dec 15:40:00 - [info] Context store : 'file' [module=localfilesystem]
29 Dec 15:40:00 - [info] Context store : 'LaMetric' [module=localfilesystem]
29 Dec 15:40:00 - [info] User directory : /home/pi/.node-red
29 Dec 15:40:00 - [info] Projects directory: /home/pi/.node-red/projects
29 Dec 15:40:00 - [info] Server now running at http://127.0.0.1:1880/editor/
29 Dec 15:40:00 - [info] Active project : jarvis
29 Dec 15:40:00 - [info] Flows file : /home/pi/.node-red/projects/jarvis/flow.json
29 Dec 15:40:02 - [info] Starting flows
29 Dec 15:40:02 - [info] [hubitat config:Hubitat B] Starting endpoint for /hubitat/webhook_B
29 Dec 15:40:02 - [info] [hubitat config:Hubitat A] Starting endpoint for /hubitat/webhook_A
29 Dec 15:40:02 - [info] [hubitat config:Hubitat E] Starting endpoint for /hubitat/webhook_E
29 Dec 15:40:02 - [info] [hubitat config:Hubitat C] Starting endpoint for /hubitat/webhook_C
29 Dec 15:40:03 - [info] [hubitat config:Hubitat D] Starting endpoint for /hubitat/webhook_D
Tesla API: No token found. Getting new token now...
Tesla API: doing api call to fetch new access token
29 Dec 15:40:10 - [info] Started flows
29 Dec 15:40:15 - [info] [mqtt-broker:69c5f4ddbab77be2] Connected to broker: jarvis-session01@mqtt://mqtt.theerrors.com:9883
29 Dec 15:40:15 - [info] [alexa-remote-account:Alexa Proxy Auth] intialising "Alexa Proxy Auth" with the PROXY method and saved data...
Tesla API: access token OK
29 Dec 15:40:15 - [info] [hubitat device:Dad's Thermostat Heat Setting] Initialized. heatingSetpoint: 72
29 Dec 15:40:16 - [info] [hubitat device:Ecobee Marys Room Temp] Initialized. temperature: 68
29 Dec 15:40:16 - [info] [hubitat device:Ecobee Marys Room Heat Set] Initialized. heatingSetpoint: 70
29 Dec 15:40:16 - [info] [hubitat device:Dad's Thermostat Heat Setting] Initialized. heatingSetpoint: 72
...
29 Dec 15:40:16 - [info] [hubitat device:Dad Blinds Sensor Closed] Initialized. contact: open
29 Dec 15:40:16 - [info] [hubitat device:Dad Lamps] Initialized. switch: off
29 Dec 15:40:16 - [info] [hubitat device:Garage_A] Initialized. door: closed
29 Dec 15:40:16 - [info] [hubitat device:Garage_B] Initialized. door: closed
29 Dec 15:40:16 - [info] [hubitat device:Garage_C] Initialized. door: closed
29 Dec 15:40:16 - [info] [hubitat device:Garage_D] Initialized. door: closed
29 Dec 15:40:16 - [info] [hubitat device:Piano Room Blinds Sensor Open] Initialized. contact: closed
29 Dec 15:40:16 - [info] [hubitat device:Piano Room Blinds Sensor Closed] Initialized. contact: open
29 Dec 15:40:16 - [info] [hubitat device:Piano Room Lights] Initialized. switch: off
29 Dec 15:40:16 - [info] [hubitat device:Alexa Test Function] Initialized. switch: off
29 Dec 15:40:16 - [info] [hubitat device:Detached Garage Heater] Initialized. switch: off
29 Dec 15:40:16 - [info] [hubitat device:Garage Light] Initialized. switch: off
29 Dec 15:40:16 - [info] [hubitat device:76cf03de.14daac] Initialized. switch: on
29 Dec 15:40:16 - [info] [hubitat device:Barrier] Initialized. switch: on
29 Dec 15:40:16 - [red] Uncaught Exception:
29 Dec 15:40:16 - [error] Error: Connection refused: Identifier rejected
    at MqttClient._handleConnack (/home/pi/.node-red/node_modules/mqtt/lib/client.js:920:15)
    at MqttClient._handlePacket (/home/pi/.node-red/node_modules/mqtt/lib/client.js:350:12)
    at work (/home/pi/.node-red/node_modules/mqtt/lib/client.js:292:12)
    at writable._write (/home/pi/.node-red/node_modules/mqtt/lib/client.js:302:5)
    at doWrite (/home/pi/.node-red/node_modules/readable-stream/lib/_stream_writable.js:428:64)
    at writeOrBuffer (/home/pi/.node-red/node_modules/readable-stream/lib/_stream_writable.js:417:5)
    at Writable.write (/home/pi/.node-red/node_modules/readable-stream/lib/_stream_writable.js:334:11)
    at TLSSocket.ondata (node:internal/streams/readable:766:22)
    at TLSSocket.emit (node:events:513:28)
    at addChunk (node:internal/streams/readable:324:12)
    at readableAddChunk (node:internal/streams/readable:297:9)
    at Readable.push (node:internal/streams/readable:234:10)
    at TLSWrap.onStreamRead (node:internal/stream_base_commons:190:23)
nodered.service: Main process exited, code=exited, status=1/FAILURE
pam_unix(sudo:session): session closed for user root
pam_unix(sudo:session): session closed for user root
nodered.service: Failed with result 'exit-code'.

```

I tried moving the .node-red/node\_modules/node-red-contrib-roomba980-fw2, but now it seems hangs waiting for the missing nodes to register themselves.

What are the next steps to try and get up and running again?

```auto
Welcome to Node-RED
===================
29 Dec 16:50:40 - [info] Node-RED version: v3.0.2
29 Dec 16:50:40 - [info] Node.js version: v18.9.1
29 Dec 16:50:40 - [info] Linux 5.10.103-v7l+ arm LE
29 Dec 16:50:41 - [info] Loading palette nodes
SmartthingsConfigNode
Creating directory: /home/pi/.node-red/smartthings/context/
29 Dec 16:50:46 - [info] Dashboard version 3.2.3 started at /ui
29 Dec 16:50:46 - [warn] Missing node modules:
29 Dec 16:50:46 - [warn] - node-red-contrib-roomba980-fw2 (0.0.1): dorita980Config, get, set, basic
29 Dec 16:50:46 - [info] Removing modules from config
29 Dec 16:50:46 - [info] Settings file : /home/pi/.node-red/settings.js
29 Dec 16:50:46 - [info] HTTP Static : /home/pi/webroot > /
29 Dec 16:50:46 - [info] Context store : 'memory' [module=memory]
29 Dec 16:50:46 - [info] Context store : 'file' [module=localfilesystem]
29 Dec 16:50:46 - [info] Context store : 'LaMetric' [module=localfilesystem]
29 Dec 16:50:46 - [info] User directory : /home/pi/.node-red
29 Dec 16:50:46 - [info] Projects directory: /home/pi/.node-red/projects
29 Dec 16:50:46 - [info] Server now running at http://127.0.0.1:1880/editor/
29 Dec 16:50:47 - [info] Active project : jarvis
29 Dec 16:50:47 - [info] Flows file : /home/pi/.node-red/projects/jarvis/flow.json
29 Dec 16:50:48 - [info] Waiting for missing types to be registered:
29 Dec 16:50:48 - [info] - dorita980Config
29 Dec 16:50:48 - [info] - get
29 Dec 16:50:48 - [info] - basic

```

---

<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [30 December 2022 00:39 UTC](https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922/2 "2022-12-30T00:39:46Z")

</div>

Well, good on you for having a backup.

Sorry, I don't know how good you are with NR and I will try to not be too _smart_ or too dumb.

You are using a RasPi. That's kind of good.  
Open a terminal/CLI and:

```auto
cd .node-red
node-red-stop

```

Can you put things back to how they were with the NEWEST flow to be used?

Then from the terminal do:  
`node-red --safe`

Node-red is started but the flow is not _ACTIVE_.  
This may help you find any errors with nodes.

Now you can check if there are any problems with node configs.

Hope that helps.

---

<div class="post-metadata">

**Author:** ![shimbone](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/shimbone/32/24815_2.png) [@shimbone](https://discourse.nodered.org/u/shimbone)\
**Post date:** [30 December 2022 00:55 UTC](https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922/3 "2022-12-30T00:55:26Z")

</div>

That was immensely helpful. THANK YOU!

Using the --safe flag I was able to get the editor started as you suggested. I deleted a couple of configuration nodes that I thought might be problematic, and the problem seems to have been solved. Thank you again for the help.

---

<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [30 December 2022 06:10 UTC](https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922/4 "2022-12-30T06:10:57Z")

</div>

Wow, I do know things.

Glad to help.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [13 January 2023 06:11 UTC](https://discourse.nodered.org/t/node-red-will-no-longer-start-with-uncaught-exception/72922/5 "2023-01-13T06:11:19Z")

</div>

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