Errors received immediately after activating plugin.
(site identifier replaced with xxx)

Warning: Use of undefined constant WP_PLUGIN_DIR - assumed 'WP_PLUGIN_DIR' (this will throw an Error in a future version of PHP) in /home1/xxx/public_html/wp-content/plugins/wp-optimizer/modules/supporters/cache/db.php on line 11

Warning: require_once(WP_PLUGIN_DIR/wp-optimizer/inc/constants.php): failed to open stream: No such file or directory in /home1/xxx/public_html/wp-content/plugins/wp-optimizer/modules/supporters/cache/db.php on line 11

Fatal error: require_once(): Failed opening required 'WP_PLUGIN_DIR/wp-optimizer/inc/constants.php' (include_path='.:/opt/cpanel/ea-php74/root/usr/share/pear') in /home1/xxx/public_html/wp-content/plugins/wp-optimizer/modules/supporters/cache/db.php on line 11

Buenas tardes:
Al intentar activar el plugin WP Optimizer recibo un mensaje de que ha ocurrido un error fatal:

Warning: require_once(/home1/isabeezf/prueba1.isabelvelasquezf.com/wp-content/plugins/wp-optimizer/admin/upgrades/1.5.0.php): failed to open stream: No such file or directory in /home1/isabeezf/prueba1.isabelvelasquezf.com/wp-content/plugins/wp-optimizer/admin/upgrader.php on line 13

Fatal error: require_once(): Failed opening required '/home1/isabeezf/prueba1.isabelvelasquezf.com/wp-content/plugins/wp-optimizer/admin/upgrades/1.5.0.php' (include_path='.:/opt/cpanel/ea-php74/root/usr/share/pear') in /home1/isabeezf/prueba1.isabelvelasquezf.com/wp-content/plugins/wp-optimizer/admin/upgrader.php on line 13

Agradezco a la persona que me pueda ayudar a solucionar este problema.

Cordialmente,

Isabel Velásquez Feria