Warning: require_once(/var/www/clients/client4/web79/web/src/includes/language.php;): Failed to open stream: No such file or directory in /var/www/clients/client4/web79/web/src/includes/apps/claude_course_builder.php on line 1

Fatal error: Uncaught Error: Failed opening required '/var/www/clients/client4/web79/web/src/includes/language.php;' (include_path='.:/usr/share/php') in /var/www/clients/client4/web79/web/src/includes/apps/claude_course_builder.php:1 Stack trace: #0 /var/www/clients/client4/web79/web/src/includes/course_builder_page.php(2): include_once() #1 /var/www/clients/client4/web79/web/layouts/template.php(223): include('...') #2 /var/www/clients/client4/web79/web/course_builder.php(21): require_once('...') #3 {main} thrown in /var/www/clients/client4/web79/web/src/includes/apps/claude_course_builder.php on line 1