Error when I activate the plugin

I get this error after activating the plugin: Fatal error: Uncaught Error: Class ‘WoowGallery\Widgets’ not found in C:\xampp\htdocs\sitoaggiornato\wp-includes\class-wp-widget-factory.php:61 Stack trace: #0 C:\xampp\htdocs\sitoaggiornato\wp-includes\widgets.php(115): WP_Widget_Factory->register(‘WoowGallery\\Wid…’) #1 C:\xampp\htdocs\sitoaggiornato\wp-content\plugins\woowgallery\class-woowgallery.php(85): register_widget(‘WoowGallery\\Wid…’) #2 C:\xampp\htdocs\sitoaggiornato\wp-includes\class-wp-hook.php(287): WoowGallery\WoowGallery->widgets(”) #3 C:\xampp\htdocs\sitoaggiornato\wp-includes\class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #4 C:\xampp\htdocs\sitoaggiornato\wp-includes\plugin.php(478): WP_Hook->do_action(Array) #5 C:\xampp\htdocs\sitoaggiornato\wp-includes\widgets.php(1773): do_action(‘widgets_init’) #6 C:\xampp\htdocs\sitoaggiornato\wp-includes\class-wp-hook.php(287): wp_widgets_init(”) #7 C:\xampp\htdocs\sitoaggiornato\wp-includes\class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #8 C:\xampp\htdocs\sitoaggiornato\wp-includes in C:\xampp\htdocs\sitoaggiornato\wp-includes\class-wp-widget-factory.php on line 61 It happens only with your plugin. can you help me? Thank you. I get the same error, Note: I have not installed the wordpress update. It only happens to me with this plugin. ( ! ) Fatal error: Uncaught Error: Class ‘WoowGallery\Widgets’ not found in C:\wamp64\www\Proyecto-pe\wp-includes\class-wp-widget-factory.php on line 61 ( ! ) Error: Class ‘WoowGallery\Widgets’ not found in C:\wamp64\www\Proyecto-pe\wp-includes\class-wp-widget-factory.php on line 61 # Time Memory Function Location 1 0.0005 409696 {main}( ) …\index.php:0 2 0.0006 410368 require_once( ‘C:\wamp64\www\Proyecto-pe\wp-admin\admin.php’ ) …\index.php:10 3 0.0007 410816 require_once( ‘C:\wamp64\www\Proyecto-pe\wp-load.php’ ) …\admin.php:34 4 0.0009 411496 require_once( ‘C:\wamp64\www\Proyecto-pe\wp-config.php’ ) …\wp-load.php:37 5 0.0010 412744 require_once( ‘C:\wamp64\www\Proyecto-pe\wp-settings.php’ ) …\wp-config.php:90 6 0.2101 8572616 do_action( ) …\wp-settings.php:546 7 0.2101 8573632 WP_Hook->do_action( ) …\plugin.php:478 8 0.2101 8573632 WP_Hook->apply_filters( ) …\class-wp-hook.php:311 9 0.2267 8585312 wp_widgets_init( ) …\class-wp-hook.php:287 10 0.2300 8615008 do_action( ) …\widgets.php:1773 11 0.2300 8615384 WP_Hook->do_action( ) …\plugin.php:478 12 0.2300 8615384 WP_Hook->apply_filters( ) …\class-wp-hook.php:311 13 0.2300 8616512 WoowGallery\WoowGallery->widgets( ) …\class-wp-hook.php:287 14 0.2300 8616512 register_widget( ) …\class-woowgallery.php:85 15 0.2300 8616512 WP_Widget_Factory->register( ) …\widgets.php:115 Fatal error: Uncaught Error: Class 'WoowGallery\Widgets' not found in C:\Users\morgan\Local Sites\dev\app\public\wp-includes\class-wp-widget-factory.php on line 61 Same error for me when downloading directly from the plugin page or installing via WordPress.