我正在尝试在 VPS上安装CDash。通常它在 apache 重新启动后工作一段时间很好，但几分钟后它开始随机失败并出现以下错误：
Warning: XSLTProcessor::importStylesheet(): I/O warning : failed to load external entity "/cdash/footer.xsl" in /cdash/cdash/common.php on line 55
Warning: XSLTProcessor::importStylesheet(): compilation error: file /cdash/ line 4 element include in /cdash/cdash/common.php on line 55
Warning: XSLTProcessor::importStylesheet(): xsl:include : unable to load /cdash/footer.xsl in /cdash/cdash/common.php on line 55
Warning: XSLTProcessor::importStylesheet(): I/O warning : failed to load external entity "/cdash/local/footer.xsl" in /cdash/cdash/common.php on line 55
Warning: XSLTProcessor::importStylesheet(): compilation error: file /cdash/ line 5 element include in /cdash/cdash/common.php on line …