Error NGINX BBB 2.6.6

I have a problem when I try to update BBB in 2.6.6, on my server everything was OK in 2.6.5 and now I have an NGINX error that no longer wants to start:
systemctl status nginx
● nginx.service – A high performance web server and a reverse proxy server
      Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
      Active: failed (Result: exit-code) since Mon 2023-05-15 11:38:57 CEST; 7min ago
        Docs: man:nginx(8)
     Process: 971 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)

May 15 11:38:57 bbbvs1x1 systemd[1]: Starting A high performance web server and a reverse proxy server…
May 15 11:38:57 bbbvs1x1 nginx[971]: nginx: [emerg] unknown “real_scheme” variable
May 15 11:38:57 bbbvs1x1 nginx[971]: nginx: configuration file /etc/nginx/nginx.conf test failed
May 15 11:38:57 bbbvs1x1 systemd[1]: nginx.service: Control process exited, code=exited, status=1/FAILURE
May 15 11:38:57 bbbvs1x1 systemd[1]: nginx.service: Failed with result ‘exit-code’.
May 15 11:38:57 bbbvs1x1 systemd[1]: Failed to start A high performance web server and a reverse proxy server.