代理协议错误在我的虚拟主机的Apache日志

在ELB后面的三台Linux服务器上有两台虚拟主机。我已经为我的ELB启用了代理协议，这样ssl的请求在实例上而不是在ELB上终止。我在我的一个虚拟主机日志中看到错误非常持续

错误日志：

[Thu Oct 19 14:57:07.126415 2017] [proxy_protocol:error] [pid 2992] [client 127.0.0.1:47348] ProxyProtocol: no valid header found [Thu Oct 19 14:57:07.471596 2017] [proxy_protocol:error] [pid 3076] [client 127.0.0.1:47388] ProxyProtocol: no valid header found [Thu Oct 19 14:57:07.785776 2017] [proxy_protocol:error] [pid 3076] [client 127.0.0.1:47428] ProxyProtocol: no valid header found [Thu Oct 19 14:57:07.909984 2017] [proxy_protocol:error] [pid 2528] [client 127.0.0.1:47450] ProxyProtocol: no valid header found [Thu Oct 19 14:57:08.384383 2017] [proxy_protocol:error] [pid 2612] [client 127.0.0.1:47496] ProxyProtocol: no valid header found

访问日志：

 127.0.0.1 - - [19/Oct/2017:14:57:45 +0000] "GET /admin/index.php HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:45 +0000] "GET /? HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:45 +0000] "GET /admin/index.php HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:45 +0000] "GET /? HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:45 +0000] "GET /admin/index.php HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:46 +0000] "GET /? HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:46 +0000] "GET /admin/index.php HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:46 +0000] "GET /? HTTP/1.1" 302 - "-" "-" 127.0.0.1 - - [19/Oct/2017:14:57:46 +0000] "GET /admin/index.php HTTP/1.1" 302 - "-" "-"

你能否build议如何消除这些错误。这些错误最近才开始，之前我没有发现任何这些错误。在我的QA环境中，我没有看到任何这样的错误。

编辑：

ELB健康检查