diff --git a/superset/assets/src/dashboard/actions/dashboardState.js b/superset/assets/src/dashboard/actions/dashboardState.js
index 883a508c0faaa..2ff139fcdb714 100644
--- a/superset/assets/src/dashboard/actions/dashboardState.js
+++ b/superset/assets/src/dashboard/actions/dashboardState.js
@@ -132,16 +132,14 @@ export function saveDashboardRequest(data, id, saveType) {
     SupersetClient.post({
       endpoint: `/superset/${path}/${id}/`,
       postPayload: { data },
-      parseMethod: null,
     })
       .then(response =>
         Promise.all([
-          Promise.resolve(response),
           dispatch(saveDashboardRequestSuccess()),
           dispatch(
             addSuccessToast(t('This dashboard was saved successfully.')),
           ),
-        ]),
+        ]).then(() => Promise.resolve(response)),
       )
       .catch(response =>
         getClientErrorObject(response).then(({ error }) =>
diff --git a/superset/assets/src/dashboard/actions/sliceEntities.js b/superset/assets/src/dashboard/actions/sliceEntities.js
index 33e3507c1a69f..31a03db0d23d2 100644
--- a/superset/assets/src/dashboard/actions/sliceEntities.js
+++ b/superset/assets/src/dashboard/actions/sliceEntities.js
@@ -3,7 +3,10 @@ import { SupersetClient } from '@superset-ui/core';
 
 import { addDangerToast } from '../../messageToasts/actions';
 import { t } from '../../locales';
-import { getDatasourceParameter } from '../../modules/utils';
+import {
+  getDatasourceParameter,
+  getClientErrorObject,
+} from '../../modules/utils';
 
 export const SET_ALL_SLICES = 'SET_ALL_SLICES';
 export function setAllSlices(slices) {
@@ -64,22 +67,19 @@ export function fetchAllSlices(userId) {
 
           return dispatch(setAllSlices(slices));
         })
-        .catch(error =>
-          Promise.all([
+        .catch(errorResponse =>
+          getClientErrorObject(errorResponse).then(({ error }) => {
             dispatch(
               fetchAllSlicesFailed(
-                error.error ||
-                  error.statusText ||
-                  t('Could not fetch all saved charts'),
+                error || t('Could not fetch all saved charts'),
               ),
-            ),
+            );
             dispatch(
               addDangerToast(
-                t('Sorry there was an error fetching saved charts: ') +
-                  error.error || error.statusText,
+                t('Sorry there was an error fetching saved charts: ') + error,
               ),
-            ),
-          ]),
+            );
+          }),
         );
     }
 
diff --git a/superset/assets/src/dashboard/components/SaveModal.jsx b/superset/assets/src/dashboard/components/SaveModal.jsx
index 13863a24c259d..2e3d94973f895 100644
--- a/superset/assets/src/dashboard/components/SaveModal.jsx
+++ b/superset/assets/src/dashboard/components/SaveModal.jsx
@@ -93,7 +93,7 @@ class SaveModal extends React.PureComponent {
         t('You must pick a name for the new dashboard'),
       );
     } else {
-      this.onSave(data, dashboardId, saveType).then(([resp]) => {
+      this.onSave(data, dashboardId, saveType).then(resp => {
         if (
           saveType === SAVE_TYPE_NEWDASHBOARD &&
           resp &&