Permission denied to LMS Admin

Hi I was trying to create an enabled “Certificate html view configuration” in the LMS admin: at

mydomain/admin/certificates/certificatehtmlviewconfiguration/

unfortunalty nginx responds with: 403 Forbidden

nginx log:
2020/05/06 22:51:54 [error] 17936#17936: *25256 access forbidden by rule, client: ****, server: , request: “GET /admin/certificates/certificatehtmlviewconfiguration/ HTTP/1.1”, host: ""

Thanks
Any help would be appreciated.

do you have superadmin permission?

Solved.

These lines needed to be took off from Redirect in Nginx
location /admin {

allow 127.0.0.1;

deny all

Thank you