Fatal error: Uncaught Error: Class "yii\debug\panels\MailPanel" not found in /home/cooperativamaism/public_html/staging/vendor/craftcms/cms/src/debug/MailPanel.php:21
Stack trace:
#0 {main}
thrown in /home/cooperativamaism/public_html/staging/vendor/craftcms/cms/src/debug/MailPanel.php on line 21