I got an error in the last few executions of a workflow, and upon investigation I found that a parameter of the node was set to fixed instead of Expression. But the interesting thing that the workflow was running fine a week before and I did not edit the workflow for ages. Looks like it has changed by itself.
Hmm, changes and updates to n8n shouldn’t affect the workflow json data so I can’t think of anything that could’ve caused it to change by itself and I’m not sure what’s going on here I’m afraid. If you’re still having issues, could you share your specific workflow and expression so we can take a better look?
I found actually upon further investigation several workflows who had this issue with the email field in the Mautic node. It was surely not me who changed them all.