I received 403 forbidden nginx error message

Hi Sir,
I received 403 forbidden nginx error message when try to log in to the wp-Admin
Here you can refer below link.

https://tropicalwaytours.jp/wp-admin/

Also I mentioned my Cpanel details too since I am not good in troubleshooting this kind of errors.Ttherefore I highly appreciate your support. You can use language translator since this server is in Japanese.

Thank you.
Br,
Prabath.