Merge choose branch not working for me

[xratios]

Hi I’m new to n8n, started 2 days ago. Learning great alot from the video I found online. I tried the tutorial to do HTTP Request for PDF.co. The goal is to use Merge chooseBranch for my earlier node Gmail (with attachment file) and HTTP Request to get the upload link to upload the files. However, when I test workflow it will show error after my merge node on my put HTTP Request node with the URL being “{{ $(‘GetUrlForUpload’).first().json.presignedUrl }}”

Can anyone advise why this occurs?

[Franz]

An execution can only follow one path, either from the When Clicking ‘Test’ Workflow or the Gmail trigger, but not both.

Therefore, this Merge node will not work.

If you want to merge the attachment back into the item, you can do so with a single path.