Adding Student to Order CRITICAL ERROR

Any idea how to fix this? I am just a lady who runs an animal shelter and I cannot get a student registered into our online class – and worried if it will have more implications for the website. This is from the WordPress email I was sent! Thanks for any help! Karen

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 6.1.1
Active theme: MADACC (version 1.7)
Current plugin: LearnPress (version 4.2.2.3)
PHP version 7.4.33

Error Details
=============
An error of type E_ERROR was caused in line 1122 of the file /homepages/42/d398353524/htdocs/wordpress/wp-content/plugins/learnpress/inc/order/class-lp-order.php. Error message: Uncaught Error: Call to a member function is_exists() on bool in /homepages/42/d398353524/htdocs/wordpress/wp-content/plugins/learnpress/inc/order/class-lp-order.php:1122
Stack trace:
#0 /homepages/42/d398353524/htdocs/wordpress/wp-content/plugins/learnpress/inc/admin/views/meta-boxes/order/details.php(261): LP_Order->get_user_data()
#1 /homepages/42/d398353524/htdocs/wordpress/wp-content/plugins/learnpress/inc/lp-template-functions.php(1031): include(‘/homepages/42/d…’)
#2 /homepages/42/d398353524/htdocs/wordpress/wp-content/plugins/learnpress/inc/custom-post-types/order.php(993): learn_press_admin_view(‘meta-boxes/orde…’, Array)
#3 /homepages/42/d398353524/htdocs/wordpress/wp-admin/includes/template.php(1409): LP_Order_Post_Type->{closure}(Object(WP_Post), Array)
#4 /homepages/42/d398353524/htdocs/wordpress/wp-admin/edit-form-advanced.php(688): do_meta_boxes(Object(WP_Screen), ‘normal’, Object(WP_Post))
#5 /homepages/42/d398353524/htdocs/wordpress/wp-admin/post.php(206): require(‘/homepages/42/d…’)
#6

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