'Could not load file or assembly 'System.Text.Json, Version=5.0.0.0, Culture=neutral, PublicKeyToken=

Hi @Gruen_Philipp ,

The other error message would be because of an upload activity that you used or find files as the variable type in 1.14.1 and 1.11.1 are different. You can get rid of that by recreating the variable in that activity

cheers