Description:
After updating to version 6.5.2 of the Secure Custom Fields plugin, a fatal error occurs when accessing the WordPress admin dashboard:

Uncaught Error: Class "SCF_Admin_Beta_Feature_Connect_Fields" not found in /wp-content/plugins/secure-custom-fields/includes/admin/beta-features.php on line 50

`Call stack:

SCF_Admin_Beta_Features::register_beta_feature('SCF_Admin_Beta_Feature_Connect_Fields')
wp-content/plugins/secure-custom-fields/includes/admin/beta-features.php:274
scf_register_admin_beta_feature('SCF_Admin_Beta_Feature_Connect_Fields')
wp-content/plugins/secure-custom-fields/includes/admin/beta-features.php:152
SCF_Admin_Beta_Features::register_beta_features('')
wp-includes/class-wp-hook.php:324
WP_Hook::apply_filters('', array)
wp-includes/class-wp-hook.php:348
WP_Hook::do_action(array)
wp-includes/plugin.php:517
do_action('scf/include_admin_beta_features')
wp-content/plugins/secure-custom-fields/includes/admin/beta-features.php:141
SCF_Admin_Beta_Features::include_beta_features()
wp-content/plugins/secure-custom-fields/includes/admin/beta-features.php:75
SCF_Admin_Beta_Features::get_beta_features()
wp-content/plugins/secure-custom-fields/includes/admin/beta-features.php:250
SCF_Admin_Beta_Features::add_beta_features_script('index.php')
wp-includes/class-wp-hook.php:324
WP_Hook::apply_filters(NULL, array)
wp-includes/class-wp-hook.php:348
WP_Hook::do_action(array)
wp-includes/plugin.php:517
do_action('admin_enqueue_scripts', 'index.php')
wp-admin/admin-header.php:123
require_once('/home/customer/www/w...min/admin-header.php')
wp-admin/index.php:137`

Additional context:

The error happens immediately when accessing wp-admin/index.php

WordPress version: 6.8.2

PHP version: 8.1

Plugin version: 6.5.2

Environment: Production

Plugin: Secure Custom Fields

Screenshot from Query Monitor attached

Issue:
It seems the class SCF_Admin_Beta_Feature_Connect_Fields is not defined or loaded when it's being registered, causing a fatal error that prevents admin access.