Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-content/plugins/course-scheduler-for-learndash/includes/CS_LD_HELPER.php:216 Stack trace: #0 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/class-wp-hook.php(308): CS_LD_HELPER->alter_query(Object(WP_Query)) #1 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #2 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #3 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/class-wp-query.php(1833): do_action_ref_array('pre_get_posts', Array) #4 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/class-wp-query.php(3749): WP_Query->get_posts() #5 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/class-wp.php(663): WP_Query->query(Array) #6 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/class-wp.php(783): WP->query_posts() #7 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-includes/functions.php(1332): WP->main('') #8 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-blog-header.php(16): wp() #9 /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/index.php(17): require('/is/htdocs/wp11...') #10 {main} thrown in /is/htdocs/wp1146132_4R9626QXFU/www/online-kurse.bildungsakademie-berlin.de/wp-content/plugins/course-scheduler-for-learndash/includes/CS_LD_HELPER.php on line 216