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Error msg: Cannot read properties of undefined (reading 'model')

Hi, Has anyone encountered the error msg: "stack": "TypeError: Cannot read properties of undefined (reading 'model') - I get this message on the path to the start step. Adding a new path, changing target step or assignment od task does not solve the problem. Webcon ver. 2025.1.1.44

MVP

Hi Konrad,

do you know someone who knows how to debug JavaScript? Then you may get a hint what's wrong.

I had the same error when upgrading from 2022 to 2025 in one application yesterday.
In my case the 'model' of the 'comment' object could not be read. This was enough to identify that the issue was caused, because the comment field itself was hidden in the field matrix but the path required a comment.

Your case will probably be different.

Best regards,
Daniel