我目前正在运行最新的 WAMP 包。我正在尝试运行 OpenCart，但在稍微修改了 Index.php 后，我得到了一个空白屏幕。我查看了 Apache 错误日志，但无法区分警告和错误，也不知道要修复什么。
[Fri Jan 24 21:48:19.458060 2014] [auth_digest:notice] [pid 16096:tid 536] AH01757: generating secret for digest authentication ...
[Fri Jan 24 21:48:19.459060 2014] [lbmethod_heartbeat:notice] [pid 16096:tid 536] AH02282: No slotmem from mod_heartmonitor
[Fri Jan 24 21:48:20.562123 2014] [ssl:warn] [pid 16096:tid 536] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri Jan 24 21:48:20.591124 2014] [mpm_winnt:notice] [pid 16096:tid 536] AH00455: Apache/2.4.4 (Win64) OpenSSL/1.0.1f PHP/5.4.12 configured -- resuming normal operations
[Fri Jan 24 21:48:20.592124 2014] [mpm_winnt:notice] [pid 16096:tid 536] AH00456: Server built: Feb 22 2013 22:08:37
[Fri Jan 24 21:48:20.592124 2014] [core:notice] [pid 16096:tid 536] AH00094: Command line: 'c:\\wamp\\bin\\apache\\apache2.4.4\\bin\\httpd.exe -d C:/wamp/bin/apache/Apache2.4.4'
[Fri Jan 24 21:48:20.595125 2014] [mpm_winnt:notice] [pid 16096:tid 536] AH00418: Parent: Created child process 16260
[Fri Jan 24 21:48:21.493176 2014] [auth_digest:notice] [pid 16260:tid 476] AH01757: generating secret for digest authentication ...
[Fri Jan 24 21:48:21.494176 2014] [lbmethod_heartbeat:notice] [pid 16260:tid 476] AH02282: No slotmem from mod_heartmonitor
[Fri Jan 24 21:48:22.557237 2014] [ssl:warn] [pid 16260:tid 476] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri Jan 24 21:48:22.574238 2014] [mpm_winnt:notice] [pid 16260:tid 476] AH00354: Child: Starting 150 worker threads.
[Fri Jan 24 21:48:47.489663 2014] [mpm_winnt:notice] [pid 16096:tid 536] AH00422: Parent: Received shutdown signal -- Shutting down the server.
[Fri Jan 24 21:48:52.001921 2014] [mpm_winnt:notice] [pid 16260:tid 476] AH00364: Child: All worker threads have exited.
[Fri Jan 24 21:48:52.031923 2014] [mpm_winnt:notice] [pid 16096:tid 536] AH00430: Parent: Child process 16260 exited successfully.
帮助将不胜感激。