我正在使用Xenforo 2.x的资源附件。当我为1种资源更新新版本时，它将自动向下载该资源的成员发送批量电子邮件。
但是当更新资源有很多下载时，我得到了这个错误。所以谁知道这是什么错误，我该如何解决？谢谢
ErrorException: [E_NOTICE] fwrite(): send of 6 bytes failed with errno=32 Broken pipe src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:241
Generated by: Unknown account Mar 11, 2019 at 4:52 AM
Stack trace
#0 [internal function]: XF::handlePhpError(8, '[E_NOTICE] fwri...', '/data/wwwroot/b...', 241, Array)
#1 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(241): fwrite(Resource id #147, 'QUIT
')
#2 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/ByteStream/AbstractFilterableInputStream.php(173): Swift_Transport_StreamBuffer->_commit('QUIT
')
#3 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/ByteStream/AbstractFilterableInputStream.php(92): Swift_ByteStream_AbstractFilterableInputStream->_doWrite('QUIT
')
#4 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(276): Swift_ByteStream_AbstractFilterableInputStream->write('QUIT
')
#5 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/EsmtpTransport.php(270): Swift_Transport_AbstractSmtpTransport->executeCommand('QUIT
', Array, Array)
#6 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(216): Swift_Transport_EsmtpTransport->executeCommand('QUIT
', Array)
#7 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(495): Swift_Transport_AbstractSmtpTransport->stop()
#8 [internal function]: Swift_Transport_AbstractSmtpTransport->__destruct()
#9 {main}