N8n upgrade cause Twilio trigger 12100: XML Document parse failure?

Describe the problem/error/question

We have several Twilio numbers connected to n8n via the webhooks. The version of n8n was 1.104.2 and it works well. We upgrade the n8n to 1.107.3 today and all the app failed to response.

What is the error message (if any)?

We can’t see the error message on the n8n, but I can see that the 12100: Document parse failure shows on the Twilio end. (12100: Document parse failure | Twilio)
I think the

Please share your workflow

webhook connected to Twilio:

{
“nodes”: [
{
“parameters”: {
“httpMethod”: “POST”,
“path”: “demo_hotel_agent”,
“responseMode”: “responseNode”,
“options”: {}
},
“type”: “n8n-nodes-base.webhook”,
“typeVersion”: 2,
“position”: [
-48,
0
],
“id”: “9d41b97b-ef68-416b-8988-4fb376533607”,
“name”: “Webhook”,
“webhookId”: “7525c9d0-0c53-4832-b9e3-12625a189d8b”
}
],
“connections”: {
“Webhook”: {
“main”: [

]
}
},
“pinData”: {},
“meta”: {
“instanceId”: “103081d373997b7ee460f88dc127c97aa0ffb58ca86a5dce5a823011669aa9bd”
}
}

HTTP request connect to Ultravox.
{
“nodes”: [
{
“parameters”: {
“method”: “POST”,
“url”: “https://api.ultravox.ai/api/agents/f6dd7bbb-ae88-4ebc-addf-d0a2203f9555/calls”,
“authentication”: “genericCredentialType”,
“genericAuthType”: “httpHeaderAuth”,
“sendHeaders”: true,
“headerParameters”: {
“parameters”: [
{}
]
},
“sendBody”: true,
“specifyBody”: “json”,
“jsonBody”: “{\n “medium”: { “twilio”: {} }\n}”,
“options”: {}
},
“type”: “n8n-nodes-base.httpRequest”,
“typeVersion”: 4.2,
“position”: [
224,
0
],
“id”: “6c634827-b6f9-47a0-9a80-f3a9a92e63ed”,
“name”: “HTTP Request”,
“credentials”: {
“httpHeaderAuth”: {
“id”: “YDZsHjnYNe6q0nk7”,
“name”: “Ultravox”
}
}
}
],
“connections”: {
“HTTP Request”: {
“main”: [

]
}
},
“pinData”: {},
“meta”: {
“instanceId”: “103081d373997b7ee460f88dc127c97aa0ffb58ca86a5dce5a823011669aa9bd”
}
}

Share the output returned by the last node

Information on your n8n setup

  • n8n version: 1.107.3 (from 1.104.2)
  • Database (default: SQLite): N/A
  • n8n EXECUTIONS_PROCESS setting (default: own, main): default online main
  • Running n8n via (Docker, npm, n8n cloud, desktop app): cloud
  • Operating system: N/A

Hey @orainic, please try to share the workflow once again as it’s currently outside a code block and broken. Thanks!