I needed the Nginx module, which is not in the assembly by default: The ngx_http_secure_link_module module (pagespeed, rtmp will also come in handy).
As I understand it, you need to rebuild Nginx. How do I do this on an installed hestiacp panel? If the current version is being updated, do you need to explicitly write the Nginx path?
So: ./configure --conf-path = / etc / nginx / nginx.conf --error-log-path = / var / log / nginx / error.log --sbin-path = / usr / sbin / nginx - -pid-path = / var / run / nginx.pid --lock-path = / var / lock / nginx.lock --http-log-path = / var / log / nginx / access.log --http-client -body-temp-path = / var / lib / nginx / body --http-proxy-temp-path = / var / lib / nginx / proxy --http-fastcgi-temp-path = / var / lib / nginx / fastcgi --http-uwsgi-temp-path = / var / lib / nginx / uwsgi --http-scgi-temp-path = / var / lib / nginx / scgi --prefix = / var / lib / nginx --with -http_stub_status_module --with-http_flv_module --with-http_ssl_module --with-http_dav_module --with-http_sub_module --with-http_realip_module --with-http_gzip_static_module --with-http_secure_link_module --with-http_secure_link_module -module = / temp / ngx_pagespeed-1.7.30.1-beta