diff --git a/server/ui-src/mixins.js b/server/ui-src/mixins.js
index c1604f0..494a64b 100644
--- a/server/ui-src/mixins.js
+++ b/server/ui-src/mixins.js
@@ -27,7 +27,7 @@ const commonMixins = {
         // Ajax error message
         handleError: function (error) {
             // handle error
-            if (error.response) {
+            if (error.response && error.response.data) {
                 // The request was made and the server responded with a status code
                 // that falls out of the range of 2xx
                 if (error.response.data.Error) {