Internal server error (HTTP Error 500) after installing phpmyadmin on a certain domain

Question

I\'m getting internal server error (HTTP Error 500) after installing phpmyadmin on a certain domain.

This is what my config.inc.php file currently reads

Answer 1

OK, if you have already installed packages php-mbstring and php-gettext and it still doesn't work, first take a look to Apache logs:

tail /var/log/apache2/error.log

If you find something like this:

Fatal error: Uncaught Twig_Error_Syntax: Unexpected "apply" tag (expecting closing tag for the "if" tag defined near line 17). in /usr/share/phpmyadmin/templates/columns_definitions/column_virtuality.twig on line 17

This is a known bug in phpmyadmin 4.9.4

The bug has been fixed in phpmyadmin 4.9.5 but please note that if you are under Debian 10 Buster you will need to upgrade the package php-twig to an higher version rather than the one included with Buster, or package phpmyadmin will be kept back to 4.9.4 during system upgrades.

You can simply upgrade php-twig from next Debian version (11, Bullseye)

apt-get install php-twig/bullseye

This worked for me. Hope this doesn't broke something else in Deb 10 LAMP setup.