Warning: include(phpqrcode/qrlib.php): Failed to open stream: No such file or directory in /home/.sites/10/site5622882/web/tag-der-offenen-tuer/generate-qr-code.php on line 3

Warning: include(): Failed opening 'phpqrcode/qrlib.php' for inclusion (include_path='.:/opt/alt/php83/usr/share/pear:/opt/alt/php83/usr/share/php:/usr/share/pear:/usr/share/php') in /home/.sites/10/site5622882/web/tag-der-offenen-tuer/generate-qr-code.php on line 3

Fatal error: Uncaught Error: Class "QRcode" not found in /home/.sites/10/site5622882/web/tag-der-offenen-tuer/generate-qr-code.php:13
Stack trace:
#0 {main}
  thrown in /home/.sites/10/site5622882/web/tag-der-offenen-tuer/generate-qr-code.php on line 13