服务器建站之后往上传东西传不了。提示说服务器内部问题，这种情况怎么解决

开始建站使用的是WP搭建的，然后加入了商城插件woocommerce,往上传不了，出现提示：

Woocommerce Error Product Request Error : Status message: Internal Server Error. Reference message: 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@example.com 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.

服务器日志也看不出东西