Sending emails using \Tx\Mailer() and then calling \Webklex \PHPIMAP to obtain the list of sent emails will result in all services being unavailable

[ninencc]

Describe the bug
Sending emails using \Tx\Mailer() and then calling \Webklex\PHPIMAP to obtain the list of sent emails will result in all services being unavailable.
Obtaining the receiving mailbox is normal, only exceptions occur when obtaining the sending mailbox.
After obtaining the list of sent emails, performing other operations may cause the server to fail to respond or result in 404

Code to Reproduce
send email:
$mail = new Mailer();
$mail->setServer(str_replace('imap', 'smtp', $config['host']), 465, 'ssl');
$mail->setAuth($config['username'], $config['password']);
$mail->setFrom($data['from_name'], $config['username'])
->setSubject($data['subject'])
->setBody($data['content'])
->addTo('', $data['to_mail'])
->send();

Get a list of sent emails:
$client->getFolderByPath('发信箱')->messages()->setFetchOrder("desc")->all()->limit($limit, intval($offset / $limit) + 1)->get();

PHP: 7.3.4nts
Nginx:1.15.11