HTTP 400 Errors due to nginx configuration

[Thomas-Brandl]

In order to be able to make easyTravel work properly with nginx, I had to make the following change in the nginx configuration:

         location / {
+           proxy_set_header    Host $http_host;
             proxy_pass http://easytravel_frontend;
         }

Without that I always got HTTP 400 errors when trying to navigate there.