Describe the problem/error/question
I have a basic site scraping process set up that does work. Here is the workflow code:
However, when I ask the process to loop back through, it fails on the HTTP request every time with an error.
The way the workflow works is it pulls in a list of URLs via Google Sheets. The Edit Field node sets those URLs as a new field called “ScrapeURL.”
The Wait node waits 30 seconds in between requests and then leads you into the HTTP Request node which is set to execute once.
The HTTP Node pulls the URL in from the ScrapeURL field.
Like I said, it works once but not when it loops back into the HTTP Request node upon completing the first item on the list of URLs.
What is the error message (if any)?
This is the error message:
{
"errorMessage": "Bad request - please check your parameters",
"errorDescription": "Bad Request",
"errorDetails": {
"rawErrorMessage": [
"400 - \"{\\\"success\\\":false,\\\"error\\\":\\\"Bad Request\\\",\\\"details\\\":[{\\\"validation\\\":\\\"url\\\",\\\"code\\\":\\\"invalid_string\\\",\\\"message\\\":\\\"Invalid url\\\",\\\"path\\\":[\\\"url\\\"]},{\\\"code\\\":\\\"custom\\\",\\\"message\\\":\\\"URL must have a valid top-level domain or be a valid path\\\",\\\"path\\\":[\\\"url\\\"]},{\\\"code\\\":\\\"custom\\\",\\\"message\\\":\\\"Invalid URL\\\",\\\"path\\\":[\\\"url\\\"]}]}\""
],
"httpCode": "400"
},
"n8nDetails": {
"nodeName": "HTTP Request",
"nodeType": "n8n-nodes-base.httpRequest",
"nodeVersion": 4.2,
"itemIndex": 0,
"time": "7/2/2025, 12:47:25 PM",
"n8nVersion": "1.100.1 (Cloud)",
"binaryDataMode": "filesystem",
"stackTrace": [
"NodeApiError: Bad request - please check your parameters",
" at ExecuteContext.execute (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-nodes-base@file+packages+nodes-base_@[email protected]_asn1.js@5_1af219c3f47f2a1223ec4ccec249a974/node_modules/n8n-nodes-base/nodes/HttpRequest/V3/HttpRequestV3.node.ts:780:15)",
" at processTicksAndRejections (node:internal/process/task_queues:105:5)",
" at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@[email protected][email protected][email protected][email protected]_/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1193:9)",
" at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@[email protected][email protected][email protected][email protected]_/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1542:27",
" at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@[email protected][email protected][email protected][email protected]_/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:2108:11"
]
}
}
Basically, it keeps acting like there’s an error with the code for the URL it’s pulling in. But the basic workflow works, so I know that’s not the problem.
The AI assistant keeps suggesting there is an error with the URLs.
Please share your workflow
I pasted the code above… here is a picture of the basic workflow:
(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)
Share the output returned by the last node
Information on your n8n setup
- n8n version: 1.100.1
- Database (default: SQLite):
- n8n EXECUTIONS_PROCESS setting (default: own, main):
- Running n8n via (Docker, npm, n8n cloud, desktop app):
- Operating system:
