Fatal error: Uncaught Error: Undefined constant Elementor\Core\Experiments\Manager::RELEASE_STATUS_RC in /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor-beta/modules/developer-edition/experiments.php:35
Stack trace:
#0 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor-beta/modules/developer-edition/experiments.php(18): ElementorBeta\Modules\DeveloperEdition\Experiments->is_beta_release_or_higher(Array)
#1 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor-beta/modules/developer-edition/experiments.php(47): ElementorBeta\Modules\DeveloperEdition\Experiments->enable_experiments(Object(Elementor\Core\Experiments\Manager), Array)
#2 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-includes/class-wp-hook.php(324): ElementorBeta\Modules\DeveloperEdition\Experiments->ElementorBeta\Modules\DeveloperEdition\{closure}(Object(Elementor\Core\Experiments\Manager), Array)
#3 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)
#4 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor/core/experiments/manager.php(115): do_action('elementor/exper...', Object(Elementor\Core\Experiments\Manager), Array)
#6 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor/core/experiments/manager.php(310): Elementor\Core\Experiments\Manager->add_feature(Array)
#7 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor/core/experiments/manager.php(425): Elementor\Core\Experiments\Manager->add_default_features()
#8 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor/core/experiments/manager.php(911): Elementor\Core\Experiments\Manager->init_features()
#9 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor/includes/plugin.php(719): Elementor\Core\Experiments\Manager->__construct()
#10 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor/includes/plugin.php(660): Elementor\Plugin->init_components()
#11 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-includes/class-wp-hook.php(324): Elementor\Plugin->init('')
#12 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#13 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#14 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-settings.php(704): do_action('init')
#15 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-config.php(233): require_once('/customers/e/b/...')
#16 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-load.php(50): require_once('/customers/e/b/...')
#17 /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-blog-header.php(13): require_once('/customers/e/b/...')
#18 /customers/e/b/f/namibiachessfederation.com/httpd.www/index.php(17): require('/customers/e/b/...')
#19 {main}
  thrown in /customers/e/b/f/namibiachessfederation.com/httpd.www/wp-content/plugins/elementor-beta/modules/developer-edition/experiments.php on line 35