Hello all
Few days ago my osTicket unexpected return 500 error while creating new ticket.
IIS return error 500 but email with confirmation has been send.

The same is when I try to open System information in osTicket.
PHP error log tell me only
[29-May-2021 20:31:35 Europe/Warsaw] PHP Deprecated: Directive 'track_errors' is deprecated in Unknown on line 0
[29-May-2021 20:36:35 Europe/Warsaw] PHP Deprecated: Directive 'track_errors' is deprecated in Unknown on line 0
Please advice me how I can trubleshot this error?