1 files changed, 6 insertions, 2 deletions
diff --git a/python/Dawn/static/utils.js b/python/Dawn/static/utils.js
index 0b886e8f..f74d681f 100644
--- a/python/Dawn/static/utils.js
+++ b/python/Dawn/static/utils.js
@@ -14,8 +14,12 @@ function query(url, params, callback){
     var xhr = new XMLHttpRequest();
     xhr.open('GET', url + '?' + encode_dict(params));
     xhr.onreadystatechange = function() {
-        if( xhr.readyState === 4){
-            callback(xhr.responseText);
+        if( xhr.readyState === 4 ) {
+            if( xhr.status === 200 ) {
+                callback(xhr.responseText)
+            } else if ( xhr.status === 400 ) {
+                console.log(xhr.responseText)
+            }
         }
     }
     xhr.send();