The login returns an error. I have a Moodle Version 3.93+ (Build: 20201224) site running on a CentOS infrastructure. I migrated it (January 2021) from version 3.4, and then to 3.5 and finally to 3.9.3.
The site was working fine until yesterday when it started throwing me the error: "cache / Invalid cache configuration file".
This happened after I tried to do a bulk course modification with Reset = 1 option. It took too long and I had to close the browser and open it again.
I attach an image of the error and the lines that the Debug throws (activated from the config.php since it does not allow me to enter the site)
I have already tried deleting the cache folder (into moodledata) as on other occasions it acted as a cache purge, but it didn't work. It rebuilt the cache folder and it keeps giving the error
I will appreciate any help.