Internal Error: Invalid parameter detected in function (null). File: (null) Line: 0

[Achille123]

Frustrating. 

Hello everyone. 

I used to be able to run this workflow the same way I'm trying now but the result is different today. I'm trying to input the content of multiple files (4000+ files) via an input tool with a wildcard character. 

I've tried any options to be honest and I cannot get anything better than this error message. It looks like the workflow doesn't even start running. I'm on the designer. Data is locally stored. 

Dynamic input gives the same result. Using a Macro is too slow. 

Does anyone have an idea on this?

[DanM]

@Achille123 have you tried bringing in only some of the files? Do you get a different result?