I had the original free version of the plugin and that all works great.

When installing the pro version I was told there was an error message.

I turned on debugging and get the below:

Uncaught Error: Call to a member function assignable_roles() on bool in /var/www/html/wp-content/plugins/wpfront-user-role-editor-business-pro/classes/class-wpfront-user-role-editor.php:621 Stack trace: #0 /var/www/html/wp-content/plugins/wpfront-user-role-editor-business-pro/classes/class-wpfront-user-role-editor-assign-roles.php(236): WPFront_User_Role_Editor->get_assignable_roles() #1 /var/www/html/wp-content/plugins/wpfront-user-role-editor-business-pro/classes/class-wpfront-user-role-editor-assign-roles.php(137): WPFront_User_Role_Editor_Assign_Roles->populate_roles_array() #2 /var/www/html/wp-includes/class-wp-hook.php(288): WPFront_User_Role_Editor_Assign_Roles->user_new_form(‘add-existing-us…’) #3 /var/www/html/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #4 /var/www/html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #5 /var/www/html/wp-admin/user-new.php(444): do_action(‘user_new_form’, ‘add-existing-us…’) #6 {main} thrown in /var/www/html/wp-content/plugins/wpfront-user-role-editor-business-pro/classes/class-wpfront-user-role-editor.php on line 621

Can you provide some assistance please.

WordPress version: 5.3.2
Plugin Version: wpfront-user-role-editor-business-pro-2.14.3