apache - OS X Apache 错误日志条目 - crls（Macports 到 Homebrew？）

Question

昨天我将本地开发环境从 MacPorts 转移到 Homebrew，一切运行良好。但是，我遇到了一些以前从未遇到过的奇怪的 apache 日志错误，想知道是否有人可以帮助诊断。

在跟踪 error_log 时，在 chrome 中进行一般网页浏览时，它们似乎每 10-15 秒发生一次：

[Thu Apr 26 14:19:41 2012] [error] [client 127.0.0.1] File does not exist: /Users/username/Sites/pca3.crl
[Thu Apr 26 14:20:04 2012] [error] [client 127.0.0.1] File does not exist: /Users/username/Sites/ThawtePremiumServerCA.crl
[Thu Apr 26 14:22:02 2012] [error] [client 127.0.0.1] File does not exist: /Users/username/Sites/crls
[Thu Apr 26 14:23:48 2012] [error] [client 127.0.0.1] File does not exist: /Users/username/Sites/SVRSecureG3.cer
[Thu Apr 26 14:23:49 2012] [error] [client 127.0.0.1] File does not exist: /Users/username/Sites/SVRSecureG3.crl

感谢您的任何意见。