Panel returns 403 forbidden

[CAllende]

For seemingly no reason, the panel on port 8083 has turned into a nginx 403 forbidden error page, and I cant figure out why. I have edited a few things lately such as the sudoers file, and a different webserver also running, lighttpd, however I dont think either of those have anything to do with this issue. Can anyone help me? Thanks.

[skurudo]

Try to restart VestaCP engine first -> /etc/init.d/vesta restart

Check your sudors:

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL