When i hit a link and that page throw an null exception. I don't kow why my app seem to be crash after any exception occurred follow by website very slow response.
I don't know why VERY slow/500 Internal Server Error? DXC auto restart app when 500 internal server error occurred?
In terms of finding reason for 500 error; if you havn't already, add logging to determine reason for null reference exception.
How does the error look if you bypass Cloudflare (calling the URL that ends in ".azurewebsites.net")?