Seblod does not have any problems with opcache, but it does not work on php 7.3 yet as far as I know, you have to use 7.2. Also you are combining ancient Joomla and Seblod versions with new version of php, you need to upgrade both first or you will get errors on any 7.x php version

Hello,

Thank you for your reply.

i know that Joomla and seblod needs udpate.

But it is strange that the website is working with php 7.3.3 without opcache, but it doesnt work with opcache enabled.

Also i'm trying to make some tests with php 5.6.40, so to see if the website works with php 5.6.40 and opcache enabled, but i'm taking an error:

"Error displaying the error page: Application Instantiation Error: Could not connect to MySQL."

Is this from mysql 8.0?

It is strange that i have the same website, with the same database, working with php 7.3.3 and it can't work with php 5.6.40.

Any suggestion would be appreciated.

Thank you one more time.

Regards,

George

This second error is pure server misconfiguration problem, if mysql is running than you probably forgot to include mysqli or similar driver into your php