Internal Server Error

Question

这是apache日志显示：[Sat Feb 29 12:42:43.562303 2020] [core:error] [pid 904:tid 2084] [client ::1:53528] End of script output before headers: vote.php

网页运行显示：Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.Please contact the server administrator at  admin@php.cn to inform them of the time this error occurred, and the actions you performed just before this error.More information about this error may be available in the server error log.