An unexpected error

My old OJS has started to say " An unexpected error has occurred. Please reload the page and try again."
It shows me only My Queue information and is not able to open Unassigned and Archives.
We want to finish our current submissions in the old system.
Thanks for any help!

Hi @imbi

Have you checked your server error_log file ?
Also, you can enable the debug parameter in your file to output further info about this error.