Elementor Issue, Course Page scattered, WooCommerce Order issue

the course page looks like this cluttered elements, how to fix it. i got this email too. this happens for only one page

Error Details
=============
An error of type E_ERROR was caused in line 19 of the file /home/u507403244/domains/kashanrashid.com/public_html/wp-content/themes/edumall/tutor/single/course/course-topics.php. Error message: Uncaught Error: Call to a member function get_topics() on null in /home/u507403244/domains/kashanrashid.com/public_html/wp-content/themes/edumall/tutor/single/course/course-topics.php:19
Stack trace:
#0 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/tutor/includes/tutor-template-functions.php(128): include()
#1 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/tutor/includes/tutor-template-functions.php(834): tutor_load_template()
#2 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/tutor-lms-elementor-addons/templates/course/content.php(28): tutor_course_topics()
#3 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/tutor-lms-elementor-addons/includes/addons/CourseContent.php(1599): include('/home/u50740324...')
#4 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/base/controls-stack.php(2325): TutorLMS\Elementor\Addons\CourseContent->render()
#5 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/base/widget-base.php(635): Elementor\Controls_Stack->render_by_mode()
#6 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/base/widget-base.php(759): Elementor\Widget_Base->render_content()
#7 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/base/element-base.php(616): Elementor\Widget_Base->get_raw_data()
#8 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/base/element-base.php(616): Elementor\Element_Base->get_raw_data()
#9 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/base/document.php(1085): Elementor\Element_Base->get_raw_data()
#10 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/base/document.php(738): Elementor\Core\Base\Document->get_elements_raw_data()
#11 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/base/controls-stack.php(1070): Elementor\Core\Base\Document->get_initial_config()
#12 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/editor/loader/common/editor-common-scripts-settings.php(37): Elementor\Controls_Stack->get_config()
#13 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/editor/loader/v1/editor-v1-loader.php(76): Elementor\Core\Editor\Loader\Common\Editor_Common_Scripts_Settings::get()
#14 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/editor/editor.php(358): Elementor\Core\Editor\Loader\V1\Editor_V1_Loader->enqueue_scripts()
#15 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/class-wp-hook.php(324): Elementor\Core\Editor\Editor->enqueue_scripts()
#16 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#17 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()
#18 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/script-loader.php(2263): do_action()
#19 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts()
#20 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#21 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()
#22 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/general-template.php(3065): do_action()
#23 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/includes/editor-templates/editor-wrapper.php(31): wp_head()
#24 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/editor/loader/v1/editor-v1-loader.php(110): include('/home/u50740324...')
#25 /home/u507403244/domains/kashanrashid.com/public_html/wp-content/plugins/elementor/core/editor/editor.php(163): Elementor\Core\Editor\Loader\V1\Editor_V1_Loader->print_root_template()
#26 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/class-wp-hook.php(324): Elementor\Core\Editor\Editor->init()
#27 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#28 /home/u507403244/domains/kashanrashid.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()
#29 /home/u507403244/domains/kashanrashid.com/public_html/wp-admin/admin.php(419): do_action()
#30 /home/u507403244/domains/kashanrashid.com/public_html/wp-admin/post.php(12): require_once('/home/u50740324...')
#31 {main}
? thrown

at one instance, user paid from card using our payment gateway integrated, order was shown completed, but the student wasnt enrolled automatically. everything in the tutor lms setting is checked for auto enrollment