# Ajax form file upload - catch file write error

**URL:** <https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062>\
**Category:** General\
**Created:** [8 June 2023 17:56 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062 "2023-06-08T17:56:30Z")\
**Posts on this page:** 11\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [8 June 2023 17:56 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/1 "2023-06-08T17:56:30Z")

</div>

I found a flow created by Nick using Ajax form for uploading files. I have modified it to write to the filesystem and it works great. I want to be able to pass the success or fail from the file write node back to the form popup message. The flow gives me this message which I realized only looks at the template results and not the write node.

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/7/b75b11ef73b97db827acd3bcc6a46b0668574512.png)

In the above case the file write failed due to incorrect file path. I am using a catch node to dump the output to context.  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/d/bd052c249141fd12b3589bbe53fe5d5ba199e34f.png)

How can I parse the context data and inserted into the a success or fail object within the Ajax call.

See flow below

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/2/12efd061db723ed2ed25f2cd39852c6140f20e4e.png)

```auto
[{"id":"b8284e52a98d6edf","type":"group","z":"1370cad3dea7d005","name":"Upload File Template","style":{"label":true},"nodes":["1a5eaffe20d55f62","badef399114c7186","53fe6b3b72822a78","39575309ba1a1ebd","446de8c01dc5aa65","3686c1606299e93c","581e9356067885c4","38a4d739d196aa75","073bfdd2b72907ab","1cfed2d982d8b591","d9c54a5756141e3a"],"x":14,"y":19,"w":412,"h":282},{"id":"1a5eaffe20d55f62","type":"http in","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"","url":"/file-upload","method":"post","upload":true,"swaggerDoc":"","x":120,"y":180,"wires":[["53fe6b3b72822a78","badef399114c7186","3686c1606299e93c"]]},{"id":"badef399114c7186","type":"debug","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"req.files","targetType":"msg","statusVal":"","statusType":"auto","x":310,"y":180,"wires":[]},{"id":"53fe6b3b72822a78","type":"function","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"","func":"msg.payload = \"OK\";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":140,"y":220,"wires":[["39575309ba1a1ebd"]]},{"id":"39575309ba1a1ebd","type":"http response","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"","statusCode":"","headers":{},"x":290,"y":220,"wires":[]},{"id":"446de8c01dc5aa65","type":"file","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"writeFile","filename":"filename","filenameType":"msg","appendNewline":false,"createDir":false,"overwriteFile":"true","encoding":"setbymsg","x":300,"y":140,"wires":[[]]},{"id":"3686c1606299e93c","type":"function","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"formatFile","func":"msg = { payload: msg.req.files[0].buffer, filename: '/home/pi'+msg.req.files[0].originalname}\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":140,"y":140,"wires":[["446de8c01dc5aa65"]]},{"id":"581e9356067885c4","type":"ui_template","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","group":"c1de91543c517b44","name":"css","order":1,"width":0,"height":0,"format":"<style>\nlabel, input {\ndisplay: block;\ncolor: #808080;\n}\nlabel {\nmargin-bottom: 10px;\n}\n</style>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","className":"","x":150,"y":100,"wires":[[]]},{"id":"38a4d739d196aa75","type":"comment","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"ReadMe","info":"# Simple Input form to load file from node red dashboard to server\n## Flow automatically picks up file name and msg encoding\n## Default upload location is /home/pi \n - Edit formatFile function to change location\n","x":220,"y":60,"wires":[]},{"id":"073bfdd2b72907ab","type":"ui_template","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","group":"c1de91543c517b44","name":"form","order":5,"width":"6","height":"2","format":"<form id=\"myForm\">\n <label>\n <input id=\"myFile\" type=\"file\" name=\"fileToUpload\">\n </label>\n <label>\n <input type=\"submit\" value=\"Upload File\" name=\"submit\">\n </label>\n</form>\n<script>\n $('#myForm').submit(function(e) {\n e.preventDefault();\n var fd = new FormData(); \n fd.append( 'file', $('#myFile')[0].files[0] );\n\n $.ajax({\n url: '/file-upload',\n data: fd,\n processData: false,\n contentType: false,\n type: 'POST',\n success: function(data){\n alert('Ok');\n $(\"#myForm\")[0].reset();\n }\n });\n });\n</script>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","className":"","x":290,"y":100,"wires":[[]]},{"id":"1cfed2d982d8b591","type":"catch","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"","scope":["446de8c01dc5aa65"],"uncaught":false,"x":150,"y":260,"wires":[["d9c54a5756141e3a"]]},{"id":"d9c54a5756141e3a","type":"function","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"function 1","func":"var error = flow.set(\"error\", msg.error)\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":300,"y":260,"wires":[[]]},{"id":"c1de91543c517b44","type":"ui_group","name":"Upload Files","tab":"f5bc4cdce2c30720","order":1,"disp":true,"width":"6","collapse":false,"className":""},{"id":"f5bc4cdce2c30720","type":"ui_tab","name":"Home","icon":"dashboard","disabled":false,"hidden":false}]

```

---

<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [10 June 2023 13:43 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/2 "2023-06-10T13:43:59Z")

</div>

The success and error is done in the ui-template and the catch node needs to be joined and if error is present send status code 500 for error response  
e.g.

```auto
[{"id":"1a5eaffe20d55f62","type":"http in","z":"d58a0e9fb6feb9d6","name":"","url":"/file-upload","method":"post","upload":true,"swaggerDoc":"","x":140,"y":1140,"wires":[["badef399114c7186","3686c1606299e93c","a70c076ce9471b62"]]},{"id":"badef399114c7186","type":"debug","z":"d58a0e9fb6feb9d6","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"req.files","targetType":"msg","statusVal":"","statusType":"auto","x":210,"y":1080,"wires":[]},{"id":"3686c1606299e93c","type":"function","z":"d58a0e9fb6feb9d6","name":"formatFile","func":"msg = { payload: msg.req.files[0].buffer, topic: \"write\", filename: '/home/pi'+msg.req.files[0].originalname}\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":360,"y":1120,"wires":[["446de8c01dc5aa65"]]},{"id":"a70c076ce9471b62","type":"change","z":"d58a0e9fb6feb9d6","name":"","rules":[{"t":"set","p":"topic","pt":"msg","to":"res","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":280,"y":1200,"wires":[["9ef6339d4ba52b16"]]},{"id":"446de8c01dc5aa65","type":"file","z":"d58a0e9fb6feb9d6","name":"writeFile","filename":"filename","filenameType":"msg","appendNewline":false,"createDir":false,"overwriteFile":"true","encoding":"setbymsg","x":520,"y":1120,"wires":[["9ef6339d4ba52b16"]]},{"id":"9ef6339d4ba52b16","type":"join","z":"d58a0e9fb6feb9d6","name":"","mode":"custom","build":"object","property":"payload","propertyType":"msg","key":"topic","joiner":"\\n","joinerType":"str","accumulate":false,"timeout":"","count":"2","reduceRight":false,"reduceExp":"","reduceInit":"","reduceInitType":"","reduceFixup":"","x":490,"y":1200,"wires":[["0f7d00e07dfb9794","24ce2c4bda306c7e"]]},{"id":"6e620ad4c4cdeee7","type":"change","z":"d58a0e9fb6feb9d6","name":"","rules":[{"t":"set","p":"topic","pt":"msg","to":"write","tot":"str"},{"t":"set","p":"payload","pt":"msg","to":"error.message","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":280,"y":1280,"wires":[["9ef6339d4ba52b16"]]},{"id":"0f7d00e07dfb9794","type":"debug","z":"d58a0e9fb6feb9d6","name":"debug 311","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":690,"y":1160,"wires":[]},{"id":"24ce2c4bda306c7e","type":"function","z":"d58a0e9fb6feb9d6","name":"function 27","func":"if(msg.error){\n msg.statusCode=500;\n}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":650,"y":1200,"wires":[["39575309ba1a1ebd"]]},{"id":"e781fb11f8ea24f4","type":"catch","z":"d58a0e9fb6feb9d6","name":"","scope":["446de8c01dc5aa65"],"uncaught":false,"x":130,"y":1280,"wires":[["6e620ad4c4cdeee7"]]},{"id":"39575309ba1a1ebd","type":"http response","z":"d58a0e9fb6feb9d6","name":"","statusCode":"","headers":{},"x":790,"y":1200,"wires":[]},{"id":"581e9356067885c4","type":"ui_template","z":"d58a0e9fb6feb9d6","group":"c1de91543c517b44","name":"css","order":1,"width":0,"height":0,"format":"<style>\nlabel, input {\ndisplay: block;\ncolor: #808080;\n}\nlabel {\nmargin-bottom: 10px;\n}\n</style>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","className":"","x":370,"y":1080,"wires":[[]]},{"id":"073bfdd2b72907ab","type":"ui_template","z":"d58a0e9fb6feb9d6","group":"c1de91543c517b44","name":"form","order":5,"width":"6","height":"2","format":"<form id=\"myForm\">\n <label>\n <input id=\"myFile\" type=\"file\" name=\"fileToUpload\">\n </label>\n <label>\n <input type=\"submit\" value=\"Upload File\" name=\"submit\">\n </label>\n</form>\n<script>\n $('#myForm').submit(function(e) {\n e.preventDefault();\n var fd = new FormData(); \n fd.append( 'file', $('#myFile')[0].files[0] );\n\n $.ajax({\n url: '/file-upload',\n data: fd,\n processData: false,\n contentType: false,\n type: 'POST',\n success: function(data){\n alert('Ok');\n $(\"#myForm\")[0].reset();\n },\n error: function(errMsg) {alert(errMsg.responseText)}\n });\n });\n</script>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","className":"","x":510,"y":1080,"wires":[[]]},{"id":"c1de91543c517b44","type":"ui_group","name":"Upload Files","tab":"f5bc4cdce2c30720","order":1,"disp":true,"width":"6","collapse":false,"className":""},{"id":"f5bc4cdce2c30720","type":"ui_tab","name":"Home","icon":"dashboard","disabled":false,"hidden":false}]

```

[edit] fixed file write filename as i removed for testing

---

<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 June 2023 17:09 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/3 "2023-06-10T17:09:54Z")

</div>

Thank you sir

---

<div class="post-metadata">

**Author:** ![cameo69](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cameo69/32/66593_2.png) [@cameo69](https://discourse.nodered.org/u/cameo69)\
**Post date:** [12 June 2023 06:52 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/4 "2023-06-12T06:52:22Z")

</div>

Is there a special setting required?

For me it does not show a message at all if upload and saving fails.

With your flow I get:  
 ![output_filesave_01](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/a/c/ac8aacb309393fa2c44ab40adbb24aca658939e8.gif)

---

<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [12 June 2023 07:05 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/5 "2023-06-12T07:05:53Z")

</div>

I had previously figured out how to catch the write error. I am storing the msg.error in context and fetching it in the Notify function node. Please note there is a little more code in this new flow as I am trying to get a spinner to work on upload. It fails but does not impact the core functions.

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/b/db559e20c6f9bfc02cbea3e95431b2f33925ab74.png)

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/e/ce1b9cc4e4ba31be66b5379d557cda386e2cef24.png)

I also coded it to show if you fail to select a file

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/f/cfa38b7e79a5f777b34495d46d855b81c6812d55.png)

```auto
[{"id":"1370cad3dea7d005","type":"tab","label":"Upload File","disabled":false,"info":"","env":[]},{"id":"b8284e52a98d6edf","type":"group","z":"1370cad3dea7d005","name":"Upload File Template","style":{"label":true},"nodes":["1a5eaffe20d55f62","53fe6b3b72822a78","39575309ba1a1ebd","446de8c01dc5aa65","3686c1606299e93c","581e9356067885c4","38a4d739d196aa75","073bfdd2b72907ab","1cfed2d982d8b591","6b932711ef1157e3"],"x":174,"y":19,"w":312,"h":282},{"id":"1a5eaffe20d55f62","type":"http in","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"Post","url":"/file-upload","method":"post","upload":true,"swaggerDoc":"","x":250,"y":180,"wires":[["3686c1606299e93c","53fe6b3b72822a78"]]},{"id":"53fe6b3b72822a78","type":"function","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"Notify","func":" await new Promise(resolve => setTimeout(resolve, 2000));\n if (flow.get(\"err_msg\") !== 'undefined') {\n msg.payload = \"File Upload \" + flow.get(\"err_msg\");\n node.send(msg);\n flow.set(\"err_msg\",'undefined');\n return;\n }\n if (flow.get(\"err_msg\") === 'undefined'){\n msg.payload = \"File Uploaded\";\n flow.set(\"err_msg\", 'undefined');\n node.send(msg);\n }","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":250,"y":220,"wires":[["39575309ba1a1ebd"]]},{"id":"39575309ba1a1ebd","type":"http response","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"","statusCode":"","headers":{},"x":390,"y":220,"wires":[]},{"id":"446de8c01dc5aa65","type":"file","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"writeFile","filename":"filename","filenameType":"msg","appendNewline":false,"createDir":false,"overwriteFile":"true","encoding":"setbymsg","x":400,"y":140,"wires":[[]]},{"id":"3686c1606299e93c","type":"function","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"formatFile","func":"msg = { payload: msg.req.files[0].buffer, filename: '/home/pi/'+msg.req.files[0].originalname}\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":260,"y":140,"wires":[["446de8c01dc5aa65"]]},{"id":"073bfdd2b72907ab","type":"ui_template","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","group":"c1de91543c517b44","name":"form","order":5,"width":"6","height":"2","format":"<body style=\"text-align: center;\">\n<form id=\"myForm\">\n <label>\n <input id=\"myFile\" type=\"file\" name=\"fileToUpload\">\n </label>\n <label>\n <input type=\"submit\" value=\"Upload File\" name=\"submit\">\n </label> \n</form> \n<div class=\"overlay\"></div>\n</body>\n<script>\n $('#myForm').submit(function(e) {\n e.preventDefault();\n var fd = new FormData(); \n fd.append( 'file', $('#myFile')[0].files[0] );\n $.ajax({\n url: '/file-upload',\n data: fd,\n processData: false,\n contentType: false,\n type: 'POST',\n success: function(data){\n alert(data);\n $(\"#myForm\")[0].reset();\n }\n });\n });\n $('#myForm').on({\n ajaxStart: function(){\n $(\"body\").addClass(\"loading\");\n },\n ajaxStop: function(){\n $(\"body\").removeClass(\"loading\");\n }\n }); \n</script>\n","storeOutMessages":false,"fwdInMessages":true,"resendOnRefresh":false,"templateScope":"local","className":"","x":390,"y":100,"wires":[[]]},{"id":"581e9356067885c4","type":"ui_template","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","group":"c1de91543c517b44","name":"css","order":1,"width":0,"height":0,"format":"<style>\nlabel, input {\ndisplay: block;\ncolor: #808080;\n}\nlabel {\nmargin-bottom: 10px;\n}\n.overlay{\ndisplay: none;\nposition: fixed;\nwidth: 100%;\nheight: 100%;\ntop: 0;\nleft: 0;\nz-index: 999;\nbackground: rgba(255,255,255,0.8) url(\"loader.gif\") center no-repeat;\n}\n/* Turn off scrollbar when body element has the loading class */\nbody.loading{\noverflow: hidden;\n}\n/* Make spinner image visible when body element has the loading class */\nbody.loading .overlay{\ndisplay: block;\n}\n\n</style>","storeOutMessages":false,"fwdInMessages":false,"resendOnRefresh":false,"templateScope":"local","className":"","x":250,"y":100,"wires":[[]]},{"id":"38a4d739d196aa75","type":"comment","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"ReadMe","info":"# Ajax Input form to load file from dashboard UI to server file system\n## Flow automatically picks up file name and msg encoding\n---\n## Default upload location is **/home/pi** \n\n## Edit **_formatFile_** function node to change location\n `msg = { payload: msg.req.files[0].buffer, filename: '/home/pi/'+msg.req.files[0].originalname}`\n\n---\n## Error Checking on Upload and file system Write will output to pop up window. There is a 2 second delay after pressing the upload file button before the pop up window will display\n Successful Upload example: `File Uploaded`\n \n Invalid filesystem example: `File Upload failed to write to file: Error: ENOENT: no such file or directory, open C:\\home\\pi\\newsleter.sql`\n \n No file selected example: `File Upload TypeError: Cannot read properties of undefined (reading 'buffer')`","x":320,"y":60,"wires":[]},{"id":"1cfed2d982d8b591","type":"catch","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"catch","scope":["446de8c01dc5aa65","3686c1606299e93c"],"uncaught":false,"x":250,"y":260,"wires":[["6b932711ef1157e3"]]},{"id":"6b932711ef1157e3","type":"function","z":"1370cad3dea7d005","g":"b8284e52a98d6edf","name":"Error","func":"if (msg.error.message !== 'undefined') {\n flow.set(\"err_msg\", msg.error.message)\n}\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":390,"y":260,"wires":[[]]},{"id":"c1de91543c517b44","type":"ui_group","name":"Upload Files","tab":"f5bc4cdce2c30720","order":1,"disp":true,"width":"6","collapse":false,"className":""},{"id":"f5bc4cdce2c30720","type":"ui_tab","name":"Home","icon":"dashboard","disabled":false,"hidden":false}]

```

---

<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [12 June 2023 07:06 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/6 "2023-06-12T07:06:53Z")

</div>

No special setting, is it my flow unedited?  
Have you tried clearing browser cache?

---

<div class="post-metadata">

**Author:** ![cameo69](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cameo69/32/66593_2.png) [@cameo69](https://discourse.nodered.org/u/cameo69)\
**Post date:** [12 June 2023 08:36 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/7 "2023-06-12T08:36:06Z")

</div>

Yes, your flow. I only changed the path as you can see in the gif.  
Unaffected by browser cache.

---

<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [12 June 2023 08:57 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/8 "2023-06-12T08:57:35Z")

</div>

I just tested [E1cid](https://discourse.nodered.org/u/E1cid) flow and it worked fine. Try restarting node red to see if that will clear your issue.

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/6/8663642945f334d4738483d9081f8865379258d8.png)

The flow I posted this morning includes a error msg if you click upload when no file is selected and will send an error. Since I am using context I have a 2 sec wait built into the node to allow time to parse the context.

---

<div class="post-metadata">

**Author:** ![cameo69](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cameo69/32/66593_2.png) [@cameo69](https://discourse.nodered.org/u/cameo69)\
**Post date:** [12 June 2023 09:00 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/9 "2023-06-12T09:00:02Z")

</div>

Hmmm, just tried your flow and it works, @E1cid's does not.  
I'll try to figure out the difference...

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/7/5705f862d68cb2cdd7d7cbe7b4f278e8b846ae4f.png)

---

<div class="post-metadata">

**Author:** ![cameo69](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cameo69/32/66593_2.png) [@cameo69](https://discourse.nodered.org/u/cameo69)\
**Post date:** [12 June 2023 09:04 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/10 "2023-06-12T09:04:05Z")

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Nevermind, I restarted the whole container and now it works. I have no idea why, but it works now. Thank you.

@Mick, if you get the progress wheel or similar to work, I would be interested in how you did it.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [26 June 2023 09:04 UTC](https://discourse.nodered.org/t/ajax-form-file-upload-catch-file-write-error/79062/11 "2023-06-26T09:04:17Z")

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