Serialization error when try to upload files into 'File' type fields when create activities

Create correct patch name.

Thanks for the patch, it works!

I had the same error uploading a SCORM package and all this while was trying to find a fix for the opigno_scorm module, but applying this patch solved the error in hand.
Thank you for the patch!

Same error here and patch #6 fix the issue

Hi oleksandr.s,
I was working on a custom Ajax form with file upload field, and I faced the issue mentioned in the description.
I followed your solution and it fixed the issue for me too!!! :)
So thanks a lot for the patch!

So that I understand the fix, can you please explain the reason how making the change fixed the issue?