Hello Arnel!
Every 500 error is tracked in error log file of your server. So may be we will try together to fix them? Just show us the latest items from there.
With the best regards, Leonid
Hi, I found the error. It's opcache memory setting. A little adjustments and it's ok now. Thanks for the tips, Leo. I'll get the said items from there and show it to you. God bless.