Modified config so that certbot should work

templates/proxy-hosts.conf.j2

 server { # simple reverse-proxy
-    listen       443 ssl;
+    listen       80;
     server_name  {{ full_hostname }};
     root /var/www/html;
 
@@ -7,11 +7,6 @@ server { # simple reverse-proxy
 
     error_page 400 401 402 403 404 500 501 502 /index.html;
 
-    ssl_certificate     /etc/letsencrypt/live/{{ full_hostname }}/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/{{ full_hostname }}/privkey.pem;
-    ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
-    ssl_ciphers         HIGH:!aNULL:!MD5;
-
     {% set cnt = 253 %}
     {% for i in range(cnt) %}
     location /{{ i + 1 }} {