Describe the problem/error/question
The issue is that the requestSignature from Slack does not match the candidateSignature generated by this template. Sign Secret from Slack is true.
sigBaseString
v0:1743576291:token=XXXXXXXXXXXXXXXXXXXXX&challenge=58WooKUWpZ5GjoawNPUJbadzLhTY9bj7ad4tLYBm0soVTXvtuWQ3&type=url_verification
requestSignature
v0=c90c493402346ce3df21bdda07e4ad53789a33b4268345e8be30a139cea96fc7
candidateSignature
2042e006e1afa7ad5b6f05b210f12d3b21c6ea419dba29565b3085022b9d0080
What is the error message (if any)?
NodeOperationError: Could not verify Slack Webhook signature at ExecuteContext.execute (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/StopAndError/StopAndError.node.js:92:15) at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/execution-engine/workflow-execute.js:681:50) at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/execution-engine/workflow-execute.js:913:62 at processTicksAndRejections (node:internal/process/task_queues:95:5) at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/execution-engine/workflow-execute.js:1246:20
Please share your workflow
My workflow
subworkflow (from https://n8n.io/workflows/2009-slack-webhook-verify-signature/) with my Sing Secret from Slack
Information on your n8n setup
I use app.n8n.cloud