最近，我们的一台服务器开始间歇性报告此错误：
Predis\Connection\ConnectionException:
Cannot assign requested address [tcp://127.0.0.1:6379]
在：
vendor/predis/predis/src/Connection/AbstractConnection.php:155
Predis\Connection\AbstractConnection::onConnectionError
触发者：artisan queue:work redis --once
我们是在装有Forge的Ubuntu vm上的标准Laravel 5.7安装。没有任何设置的更改，但是此错误突然出现。关于可能发生的事情有什么想法吗？
运行netstat -vatnl | grep 6379会导致以下结果：
tcp 0 0 0.0.0.0:6379 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6379 127.0.0.1:58244 ESTABLISHED
tcp 0 0 127.0.0.1:52098 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:51171 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:6379 127.0.0.1:33028 ESTABLISHED
tcp 0 0 127.0.0.1:49731 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:41169 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:60007 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:51065 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:52277 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:47116 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:56150 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:36441 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:35296 ESTABLISHED
tcp 0 0 127.0.0.1:47272 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:36221 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:41169 ESTABLISHED
tcp 0 0 127.0.0.1:49921 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:6379 127.0.0.1:60007 ESTABLISHED
tcp 0 0 127.0.0.1:45921 127.0.0.1:6379 TIME_WAIT
tcp 0 14 127.0.0.1:6379 127.0.0.1:53708 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:42849 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:36441 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:38599 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:53578 ESTABLISHED
tcp 0 0 127.0.0.1:6379 127.0.0.1:56150 ESTABLISHED
tcp 0 0 127.0.0.1:38599 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:48411 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:6379 127.0.0.1:36221 ESTABLISHED
tcp 0 0 127.0.0.1:42849 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:48276 127.0.0.1:6379 TIME_WAIT
tcp 0 0 127.0.0.1:53578 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:35296 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:58244 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:53708 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:33028 127.0.0.1:6379 ESTABLISHED
tcp 0 0 127.0.0.1:46072 127.0.0.1:6379 TIME_WAIT
我不熟悉这里发生的事情，因此非常感谢您对理解的任何帮助。