wordpress 安装成功后 打开主页没问题，但是打开其他的设置就出现Internal Server Error

wordpress利用临时域名打开主页没问题，点击外观或者插件就出现下面的错误，我用的临时域名（跟这个有关，目前还在备案中）

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, webmaster@bxu2359680133.my3w.com 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.