Fatal error: Uncaught Error: Class "FcfVendor\WPDesk\Tracker\OptInPage" not found in /htdocs/wp-content/plugins/flexible-checkout-fields/vendor_prefixed/wpdesk/wp-wpdesk-tracker/src/PSR/WPDesk/Tracker/OptInOptOut.php:45 Stack trace: #0 /htdocs/wp-content/plugins/flexible-checkout-fields/vendor_prefixed/wpdesk/wp-plugin-flow-common/src/Initialization/TrackerInstanceAsFilterTrait.php(69): FcfVendor\WPDesk\Tracker\OptInOptOut->create_objects() #1 /htdocs/wp-content/plugins/flexible-checkout-fields/vendor_prefixed/wpdesk/wp-plugin-flow-common/src/Initialization/Simple/SimpleFreeStrategy.php(55): FcfVendor\WPDesk\Plugin\Flow\Initialization\Simple\SimpleFreeStrategy->register_tracker_ui_extensions() #2 /htdocs/wp-content/plugins/flexible-checkout-fields/vendor_prefixed/wpdesk/wp-plugin-flow-common/src/PluginBootstrap.php(83): FcfVendor\WPDesk\Plugin\Flow\Initialization\Simple\SimpleFreeStrategy->run_init(Object(FcfVendor\WPDesk_Plugin_Info)) #3 /htdocs/wp-includes/class-wp-hook.php(324): FcfVendor\WPDesk\Plugin\Flow\PluginBootstrap::FcfVendor\WPDesk\Plugin\Flow\{closure}('') #4 /htdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #5 /htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /htdocs/wp-settings.php(559): do_action('plugins_loaded') #7 /htdocs/wp-config.php(78): require_once('/htdocs/wp-sett...') #8 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...') #9 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...') #10 /htdocs/index.php(17): require('/htdocs/wp-blog...') #11 {main} thrown in /htdocs/wp-content/plugins/flexible-checkout-fields/vendor_prefixed/wpdesk/wp-wpdesk-tracker/src/PSR/WPDesk/Tracker/OptInOptOut.php on line 45