Fixes renewal unused http certificates

backend/templates/default.conf

@@ -16,6 +16,8 @@ server {
   error_log /data/logs/default-host_error.log warn;
 {% include "_exploits.conf" %}
 
+  include conf.d/include/letsencrypt-acme-challenge.conf;
+
 {%- if value == "404" %}
   location / {
     return 404;

docker/rootfs/etc/nginx/conf.d/default.conf

@@ -9,9 +9,10 @@ server {
 
 	server_name localhost-nginx-proxy-manager;
 	access_log /data/logs/fallback_access.log standard;
-	error_log /dev/null crit;
+	error_log /data/logs/fallback_error.log warn;
 	include conf.d/include/assets.conf;
 	include conf.d/include/block-exploits.conf;
+	include conf.d/include/letsencrypt-acme-challenge.conf;
 
 	location / {
 		index index.html;