elements_manager->get_element( $el_type, $widget_type ); if ( ! $element ) { throw new \Exception( esc_html( "Invalid element: Element type $el_type with widget type $widget_type is not registered." ) ); } $element_instance = new $element(); /** @var Atomic_Element_Base | Atomic_Widget_Base $element_instance */ if ( ! Utils::is_atomic( $element_instance ) ) { throw new \Exception( esc_html( "Invalid element: Element type $el_type with widget type $widget_type is not an atomic element/widget." ) ); } $props_schema = $element_instance->get_props_schema(); if ( ! isset( $props_schema[ $prop_key ] ) ) { throw new \Exception( esc_html( "Prop key '$prop_key' does not exist in the schema of element '{$element_instance->get_elem