Anyone can help? i've problem with pdf report. This problem cause after i've installed nginx and config the port forwading, after that all report cannot write to pdf with error:

Wkhtmltopdf failed (error code: -11). Message: None.

Here my config nginx:

upstream odoo {

        server 127.0.0.1:8069;

}

upstream odoo-im {

        server 127.0.0.1:8072;

}

server {

        location / {

                proxy_pass http://odoo;

                proxy_connect_timeout 1800;

                proxy_send_timeout 1800;

                proxy_read_timeout 1800;

                send_timeout 1800;

        }

        location /longpolling {

                proxy_pass http://odoo-im;

                proxy_connect_timeout 1800;

                proxy_send_timeout 1800;

                proxy_read_timeout 1800;

                send_timeout 1800;

        }

        access_log /var/log/nginx/odoo.access.log;

        error_log /var/log/nginx/odoo.error.log;

}

thank you.