I'm getting the same error on what should be a pretty simple job. Trying to email anyone that submits a response via MS Forms with an email that contains a unique ID:

{"statusCode":502,"headers":{"X-Cache":"CONFIG_NOCACHE","X-MSEdge-Ref":"Ref A: 5CE39B9F16884549B3FAAEC33FE64B84 Ref B: BLUEDGE1716 Ref C: 2023-03-08T20:20:05Z","Timing-Allow-Origin":"*","x-ms-apihub-cached-response":"false","x-ms-apihub-obo":"false","retry-after":"3600","Date":"Wed, 08 Mar 2023 20:20:04 GMT","Content-Length":"256","Content-Type":"application/json"},"body":{"error":{"code":502,"source":"canada-001.azure-apim.net","clientRequestId":"04a244e2-9b9a-457b-93f3-0af2f738d333","message":"The response is not in a JSON format.","innerError":"Cannot read server response."}}}