Error in phpMyAdmin after updating to v4.8.0: The $cfg['TempDir'] (./tmp/) is not accessible

Question

phpMyAdmin worked fine with v4.7.9. Now after updating to v4.8.0 today (replacing the old phpmyadmin folder against the new one) I\'m getting this mess

Answer 1

Create a tmp folder in the base directory of the phpMyAdmin install (e.g. /usr/share/phpmyadmin/tmp), and make sure that it is writable by the user that PHP is running under.