I have a problem accessing my website. It shows this error:
Coding error detected, it must be fixed by a programmer: Failed to unserialise data from file. Either failed to read, or failed to write.
My website: https://lms.rafiee.net/
I tried by purging all cache and changing cache folder name in moodledata, however, it works temporarily, and after a short while, it returns back.
Any idea how to help?
Also, themes are not working properly in my moodle after this issue, The site is supper ugly. Is there any reason behind this?