diff --git a/scripts/boxesserver b/scripts/boxesserver
index e6564a9..4ac9b76 100755
--- a/scripts/boxesserver
+++ b/scripts/boxesserver
@@ -488,7 +488,7 @@ class BServer:
                     box.parse(box.layout.split("\n"))
                 except Exception as e:
                     start_response(status, headers)
-                    return self.errorMessage(name, e)
+                    return self.errorMessage(name, e, _)
 
             try:
                 fd, box.output = tempfile.mkstemp()