Plumsail Public Form connector in Power Automate stopped working

We have used plumsail public form connector in Power automate for close to a year now and this has stopped working. We get the following error -

Could not retrieve values. The dynamic invocation request failed with error: {
"error": {
"code": 404,
"source": "",
"clientRequestId": "69fada22-130d-4c5f-b83c-df0dc8bde5e4",
"message": "The response is not in a JSON format.",
"innerError": "\r\nNot Found\r\n<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii">\r\n

Not Found


HTTP Error 404. The requested resource is not found.


We are encountering a "404 Not Found" error when attempting API calls, similar to other reports here. The response suggests the requested resource is not found, and the error is returned in HTML instead of JSON, indicating a possible misconfiguration or endpoint issue.

Error Details:

  • Error Code: 404
  • Message: The response is not in a JSON format; instead, an HTML "Not Found" page is returned.

This is critical for our operations, and we need a resolution ASAP. Any assistance or updates from the Plumsail team would be greatly appreciated.

Thank you.

They rolled it back, and ours is working now.

Hi @TN.DVS, @prathy,

This issue was, indeed, connected to the recent update we already rolled back. There should be no problems with Power Automate connectors now, but if there are, let me know.

On this note, if any of your forms have been corrupted during the incident, please export them and send the files to so we can fix them.