Continuous Error 500 & Cannot Save

[JosNas]

Hello I am constantly getting Error 500 which is logging:

[I]ERROR: Uncaught Exception Espo\Core\Exceptions\Error: "Bad data stored in file 'data/cache/application/metadata.php'." at .../admin/application/Espo/Core/Utils/File/Manager.php line 234[/I]

There logged error code/statement above is repeated too many times in the log file. Why could this happen?

[yuri]

Hi,

Try removing data/cache/application manually. Maybe you have wrong file permissions.

[JosNas]

I deleted the 'application' folder in data/cache/application, it's still giving me the same error but in a new log file

[JosNas]

I am 70% sure that the issue is because of the config.php file but I'm wondering what could it be.. all DB credentials are right

[JosNas]

I think I found the problem but not it's cause yet. The problem is data/cache/application/metadata.php is being emptied somehow whenever I clear cache/rebuild backend (I check metadata.php and it is empty with no code in it).