Array Null

In personalize mode, this news appears. The code is as follows. What should I change? p.s. The code in bold corresponds to the line to be corrected Thank you very much for your help Notice: Trying to access array offset on value of type null in /Applications/MAMP/htdocs/romana-avellino/wp-content/themes/mesmerize-pro/inc/companion.php on line 156 e 149 public static function check_companion( $wp_customize ) { $plugin_state = self::$plugin_state; if ( ! $plugin_state['installed'] || ! $plugin_state['active'] ) { $wp_customize->add_setting( 'companion_install', array( 'default' => '', 'sanitize_callback' => 'esc_attr', ) ); if ( ! $plugin_state['installed'] ) { $wp_customize->add_control( new Install_Companion_Control( $wp_customize, 'mesmerize_page_content', array( 'section' => 'page_content', 'settings' => 'companion_install', 'label' => self::$config['install_label'], 'msg' => self::$config['install_msg'], 'plugin_state' => $plugin_state, 'slug' => self::$slug, ) ) ); } else { $wp_customize->add_control( new Activate_Companion_Control( $wp_customize, 'mesmerize_page_content', array( 'section' => 'page_content', 'settings' => 'companion_install', 'label' => self::$config['activate_label'], 'msg' => self::$config['activate_msg'], 'plugin_state' => $plugin_state, 'slug' => self::$slug, ) ) ); } Companion_Plugin::show_companion_popup( $plugin_state ); } } Hello, For support for pro version please contact the author at support@extendthemes.com or using the site contact form http://extendthemes.com/mesmerize/#support I’ve already tried to contact support, but I haven’t received a response for days Hello, Can you send us an email directly at support@extendthemes.com ?