[Nginx] Fix Nginx buffer sizes by moving parameters to correct location

data/conf/nginx/includes/site-defaults.conf

@@ -22,10 +22,6 @@
   add_header X-Permitted-Cross-Domain-Policies none;
   add_header Referrer-Policy strict-origin;
 
-  proxy_buffer_size 128k;
-  proxy_buffers 64 512k;
-  proxy_busy_buffers_size 512k;
-
   index index.php index.html;
 
   client_max_body_size 0;
@@ -167,7 +163,9 @@
     proxy_connect_timeout 75;
     proxy_send_timeout 3600;
     proxy_read_timeout 3600;
-    #proxy_buffers 64 256k;
+    proxy_buffer_size 128k;
+    proxy_buffers 64 512k;
+    proxy_busy_buffers_size 512k;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header Host $http_host;