Verbindung zu Pool-DB 2021 fehlgeschlagen: SQLSTATE[HY000] [2002] No such file or directory

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<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /var/www/vhosts/tournamentapp.de/httpdocs/php_cfg/cfg.php:127
Stack trace:
#0 /var/www/vhosts/tournamentapp.de/httpdocs/fancy-begegnungskarte.php(6): require()
#1 {main}
  thrown in <b>/var/www/vhosts/tournamentapp.de/httpdocs/php_cfg/cfg.php</b> on line <b>127</b><br />