Credential Store for API now giving ERROR: No path back to node when using expression

[rgarrow]

Describe the problem/error/question

I have a set of APIs I need to call that require a Bearer token. I have several workflows that work fine using the following pattern. Call Authentication endpoint which returens a Token. Do an Edit Fields node and build a variable called btoken and set it to “Bearer {{ $json.Token }}” then add ${{ $json.btoken }} to the credential store as an expression. About 1 month ago I can no longer get the credential store to render the Bearer token. Existing workflows setup like this still work, but if I clone them or edit them, I get the error.

What is the error message (if any)?

I get the message ERROR: No path back to node

Please share your 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:**1.123.6 (Stable)
• Database (default: SQLite): default
• n8n EXECUTIONS_PROCESS setting (default: own, main): default
• Running n8n via (Docker, npm, n8n cloud, desktop app): n8n cloud
• Operating system: n/a
  
  
  
  
  
  
  
  
  
  
  

[solomon]

The “no path back to node” is expected while saving the credentials. This will only work when you execute the workflow.

Make sure the variable is arriving at the node previous to the HTTP request and that you’re using the exact same name for the fields in the expressions.

[rgarrow]

Thank you Solomon. I had done that before and it kept failing on the last step. I went set it up cleanly again and it worked. Not sure why it was failing before. I guess the path to node thing fooled me.