Please correct /app/templates/_location.conf

[voha177]

/app/templates/_location.conf

Now you have:

{{ advanced_config }}

proxy_set_header Host $host;
proxy_set_header X-Forwarded-Scheme $scheme;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Real-IP $remote_addr;

proxy_pass {{ forward_scheme }}://{{ forward_host }}:{{ forward_port }}{{ forward_path }};

please change the order => 1st your config, then the user's config. like this:

proxy_set_header Host $host;
proxy_set_header X-Forwarded-Scheme $scheme;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Real-IP $remote_addr;

proxy_pass {{ forward_scheme }}://{{ forward_host }}:{{ forward_port }}{{ forward_path }};

{{ advanced_config }}

Otherwise your configuration overwrites the user configuration, which is not good :)