Website keeps going down.

One of the wordpress website I manage on a godaddy wordpress managed hosting keeps going down at randomly, and comes back up again itself. I have been pulling my hair, and spending countless hours on godaddy support trying to figure out why.

 

Here is the address to the website.

 

https://mehrbanali.com/

 

Following is the error I get. Please help.

 

go-daddy-error.PNG