Internal Error in WordPress

I received in error message when typing in my domain name:

{"code":"internal_server_error","message":"
There has been a critical error on this website.

How do I fix this error?

Code: [Select]

vi /usr/local/apache/domlogs/YOUR_DOMAINCheck here what the error is. It should tell you.
Sometimes, wordpress will automatically email the wordpress adminstrator email address the reason for the internal error. So, check your mailbox or the logs above