Errors on Editorskit

Hi, I have an issue with a website I am having to look after. I am not an expert in wordpress but our groups website person left so we have limited experience. I get this error page saying “There has been a critical error on this website, Please check your admin email inbox for instruction.” when accessing Editorskit from the admin of the website and the error code is also posted below.

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 5.6.14
Current theme: BeSocial (version 4.5.3)
Current plugin: EditorsKit (version 1.40.6)
PHP version 7.4.33

Error Details
=============
An error of type E_ERROR was caused in line 126 of the file /home/nmlukwlpsuo6/public_html/wp-content/plugins/block-options/includes/class-editorskit-welcome.php. Error message: Uncaught Error: Class ‘WP_Block_Editor_Context’ not found in /home/nmlukwlpsuo6/public_html/wp-content/plugins/block-options/includes/class-editorskit-welcome.php:126
Stack trace:
#0 /home/nmlukwlpsuo6/public_html/wp-includes/class-wp-hook.php(287): EditorsKit_Welcome->enqueue(‘toplevel_page_e…’)
#1 /home/nmlukwlpsuo6/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#2 /home/nmlukwlpsuo6/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array)
#3 /home/nmlukwlpsuo6/public_html/wp-admin/admin-header.php(102): do_action(‘admin_enqueue_s…’, ‘toplevel_page_e…’)
#4 /home/nmlukwlpsuo6/public_html/wp-admin/admin.php(239): require_once(‘/home/nmlukwlps…’)
#5 /home/nmlukwlpsuo6/public_html/wp-admin/options-general.php(10): require_once(‘/home/nmlukwlps…’)
#6 {main}
  thrown

Is anyone able to assist & advise what I need to do to fix ? Since this we also sometimes get error 404 when accessing the page, even though no changes have been made to it at all.

Many thanks