[問題] phpBB 2.0.6 pm功能失效

[BadDevil]

phpBB 2.0.6 pm功能失效

朋友的論壇有問題請高手指點一下哪有問題 謝謝~
訊息如下:
500 Internal Server Error

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@bbs.com.tw and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.


Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
--------------------------------------------------------------------------------