Fatal error: Uncaught Error: Class "yii\mail\BaseMailer" not found in /home/cooperativamaism/public_html/staging/vendor/yiisoft/yii2-symfonymailer/src/Mailer.php:23 Stack trace: #0 {main} thrown in /home/cooperativamaism/public_html/staging/vendor/yiisoft/yii2-symfonymailer/src/Mailer.php on line 23