We upgraded Service Desk from 9049 to  9.2 Build  9238 successfully. We faced an error when we arrange Changes (My openChanges, All Changes, Closed Changes etc) And when we arrange tasks the same error.

This happens for most of our technicians. For 2-3 technicians its ok. We try to clean browsers clear cache, history etc but still the same error.
Attached you can find the error.

Regards