Fixing Incompatibility with Wordpress Version 5.7.1

[exonianp]

When visiting the setting page of the plugin after the activation of the plugin on Wordpress 5.7.1 you get the following error:

Fatal error: Uncaught ArgumentCountError: Too few arguments to function do_settings_fields(), 1 passed in /var/www/wordpress/wp-content/plugins/wpckan/templates/settings.php on line 5 and exactly 2 expected in /var/www/wordpress/wp-admin/includes/template.php:1714 Stack trace: #0 /var/www/wordpress/wp-content/plugins/wpckan/templates/settings.php(5): do_settings_fields() #1 /var/www/wordpress/wp-content/plugins/wpckan/wpckan.php(208): include('/var/www/wordpr...') #2 /var/www/wordpress/wp-includes/class-wp-hook.php(292): wpckan->plugin_settings_page() #3 /var/www/wordpress/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters() #4 /var/www/wordpress/wp-includes/plugin.php(484): WP_Hook->do_action() #5 /var/www/wordpress/wp-admin/admin.php(259): do_action() #6 /var/www/wordpress/wp-admin/options-general.php(10): require_once('/var/www/wordpr...') #7 {main} thrown in /var/www/wordpress/wp-admin/includes/template.php on line 1714
The solution to this issue is to modify line 5 of wp-content/plugins/wpckan/templates/settings.php
from
<?php @do_settings_fields('wpckan-group'); ?>
to
<?php @do_settings_fields('wpckan-group', 'wpckan-group'); ?>

After this everything is working fine.

Committed the change here

Thank you for the great work.