Fix router matching for underscored route params

services/nginx/app/classes/router.php

@@ -89,7 +89,7 @@ class router
         }
         // Regex
         $route = str_replace('/', '\/', $route);
-        $route = preg_replace('/{[a-zA-Z0-9]+}/', '([a-zA-Z0-9]+)', $route);
+        $route = preg_replace('/{[a-zA-Z0-9_]+}/', '([a-zA-Z0-9]+)', $route);
         if (preg_match('/^' . $route . '$/', $this->url)) {
             return true;
         }