Fatal error: Uncaught Error: Call to a member function get_id() on bool in /homepages/30/d20732576/htdocs/clickandbuilds/aircollegeprofessionellonlinelernen/wp-content/plugins/thim-course-builder/enroll-course/tpl/lp3/default.php:15 Stack trace: #0 /homepages/30/d20732576/htdocs/clickandbuilds/aircollegeprofessionellonlinelernen/wp-content/plugins/thim-course-builder/inc/functions.php(232): include() #1 /homepages/30/d20732576/htdocs/clickandbuilds/aircollegeprofessionellonlinelernen/wp-content/plugins/thim-course-builder/enroll-course/enroll-course.php(99): thim_get_template('lp3/default.php', Array, 'enroll-course/t...') #2 /homepages/30/d20732576/htdocs/clickandbuilds/aircollegeprofessionellonlinelernen/wp-includes/shortcodes.php(343): Thim_SC_Enroll_Course->shortcode(Array, '', 'thim-enroll-cou...') #3 [internal function]: do_shortcode_tag(Array) #4 /homepages/30/d20732576/htdocs/clickandbuilds/aircollegeprofessionellonlinelernen/wp-includes/shortcodes.php(218): preg_replace_callback('/\\[(\\[?)(thim\\-...', 'do_short in /homepages/30/d20732576/htdocs/clickandbuilds/aircollegeprofessionellonlinelernen/wp-content/plugins/thim-course-builder/enroll-course/tpl/lp3/default.php on line 15