Can't Login Non Admin User in WordPress

Question

Before I can login without problem with any user registered on my WordPress site. But now, I can't login non admin users to my WordPress site. Administrator has no problem signing in.

When non admin login, it throws the following error:

PHP message: PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 5041000 bytes)

I believe this is not due to the lack of memory since I can login admin user without problem.

Does anyone has experience the same problem before?

Answer 1

I'm with you on that it doesn't seem like it is running low on memory, but it probably wouldn't hurt to increase your memory in the php.ini file. I would recommend disabling all of your plugins and seeing if the problem exists. If so, activate them one by one to isolate the problem plugin.