Describe the problem/error/question
pydantic code (tested to work in pyodide 0.23.2) fails in n8n 1.88 code node. More details can be found in the attached screenshots.
What is the error message (if any)?
{
"errorMessage": "TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'\n",
"errorDetails": {},
"n8nDetails": {
"nodeName": "prepParams",
"nodeType": "n8n-nodes-base.code",
"nodeVersion": 2,
"n8nVersion": "1.88.0 (Self Hosted)",
"binaryDataMode": "default",
"stackTrace": [
"Error: TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'",
"",
" at PythonSandbox.getPrettyError (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code/PythonSandbox.js:91:14)",
" at PythonSandbox.runCodeInPython (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code/PythonSandbox.js:78:18)",
" at PythonSandbox.runCodeAllItems (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code/PythonSandbox.js:49:29)",
" at ExecuteContext.execute (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code/Code.node.js:155:17)",
" at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/execution-engine/workflow-execute.js:681:27)",
" at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/execution-engine/workflow-execute.js:915:51",
" at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/execution-engine/workflow-execute.js:1246:20"
]
}
}
Please share your workflow
Information on your n8n setup
- n8n version: 1.88
- Database (default: SQLite): PostgreSQL
- n8n EXECUTIONS_PROCESS setting (default: own, main): Default
- Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
- Operating system: Linux
