The plugin must have the bootstrap complete before running the activation hook

Author: Marco Pereirinha

php/class-plugin.php

@@ -421,7 +421,6 @@ private function is_notice_component( $component ) {
 	 * @return void
 	 */
 	public function init() {
-		require_once ABSPATH . 'wp-admin/includes/plugin.php';
 		$plugin              = get_plugin_data( CLDN_CORE );
 		$location            = $this->locate_plugin();
 		$this->slug          = ! empty( $plugin['TextDomain'] ) ? $plugin['TextDomain'] : $location['dir_basename'];

php/class-utils.php

@@ -331,6 +331,8 @@ protected static function table_installed() {
 	 * Install our custom table.
 	 */
 	public static function install() {
+		// Ensure that the plugin bootstrap is loaded.
+		get_plugin_instance()->init();
 
 		$sql = self::get_table_sql();