diff --git a/packages/netlify-cms-core/src/actions/auth.js b/packages/netlify-cms-core/src/actions/auth.js
index bcbb8c15..ce7479b2 100644
--- a/packages/netlify-cms-core/src/actions/auth.js
+++ b/packages/netlify-cms-core/src/actions/auth.js
@@ -79,7 +79,10 @@ export function loginUser(credentials) {
         console.error(error);
         dispatch(
           notifSend({
-            message: `${error.message}`,
+            message: {
+              details: error.message,
+              key: 'ui.toast.onFailToAuth',
+            },
             kind: 'warning',
             dismissAfter: 8000,
           }),
diff --git a/packages/netlify-cms-core/src/constants/defaultPhrases.js b/packages/netlify-cms-core/src/constants/defaultPhrases.js
index d353cf03..1315f806 100644
--- a/packages/netlify-cms-core/src/constants/defaultPhrases.js
+++ b/packages/netlify-cms-core/src/constants/defaultPhrases.js
@@ -1,160 +1,161 @@
-export function getPhrases() {
-  return {
-    app: {
-      header: {
-        content: 'Contents',
-        workflow: 'Workflow',
-        media: 'Media',
-        quickAdd: 'Quick add',
-      },
-      app: {
-        errorHeader: 'Error loading the CMS configuration',
-        configErrors: 'Config Errors',
-        checkConfigYml: 'Check your config.yml file.',
-        loadingConfig: 'Loading configuration...',
-        waitingBackend: 'Waiting for backend...',
-      },
-      notFoundPage: {
-        header: 'Not Found',
-      },
-    },
-    collection: {
-      sidebar: {
-        collections: 'Collections',
-        searchAll: 'Search all',
-      },
-      collectionTop: {
-        viewAs: 'View as',
-        newButton: 'New %{collectionLabel}',
-      },
-      entries: {
-        loadingEntries: 'Loading Entries',
-        cachingEntries: 'Caching Entries',
-        longerLoading: 'This might take several minutes',
-      },
-    },
-    editor: {
-      editorControlPane: {
-        widget: {
-          required: '%{fieldLabel} is required.',
-          regexPattern: "%{fieldLabel} didn't match the pattern: %{pattern}.",
-          processing: '%{fieldLabel} is processing.',
-        },
-      },
-      editor: {
-        onLeavePage: 'Are you sure you want to leave this page?',
-        onUpdatingWithUnsavedChanges:
-          'You have unsaved changes, please save before updating status.',
-        onPublishingNotReady: 'Please update status to "Ready" before publishing.',
-        onPublishingWithUnsavedChanges: 'You have unsaved changes, please save before publishing.',
-        onPublishing: 'Are you sure you want to publish this entry?',
-        onDeleteWithUnsavedChanges:
-          'Are you sure you want to delete this published entry, as well as your unsaved changes from the current session?',
-        onDeletePublishedEntry: 'Are you sure you want to delete this published entry?',
-        onDeleteUnpublishedChangesWithUnsavedChanges:
-          'This will delete all unpublished changes to this entry, as well as your unsaved changes from the current session. Do you still want to delete?',
-        onDeleteUnpublishedChanges:
-          'All unpublished changes to this entry will be deleted. Do you still want to delete?',
-        loadingEntry: 'Loading entry...',
-      },
-      editorToolbar: {
-        publishing: 'Publishing...',
-        publish: 'Publish',
-        published: 'Published',
-        publishAndCreateNew: 'Publish and create new',
-        deleteUnpublishedChanges: 'Delete unpublished changes',
-        deleteUnpublishedEntry: 'Delete unpublished entry',
-        deletePublishedEntry: 'Delete published entry',
-        deleteEntry: 'Delete entry',
-        saving: 'Saving...',
-        save: 'Save',
-        deleting: 'Deleting...',
-        updating: 'Updating...',
-        setStatus: 'Set status',
-        backCollection: ' Writing in %{collectionLabel} collection',
-        unsavedChanges: 'Unsaved Changes',
-        changesSaved: 'Changes saved',
-        draft: 'Draft',
-        inReview: 'In review',
-        ready: 'Ready',
-        publishNow: 'Publish now',
-      },
-      editorWidgets: {
-        unknownControl: {
-          noControl: "No control for widget '%{widget}'.",
-        },
-        unknownPreview: {
-          noPreview: "No preview for widget '%{widget}'.",
-        },
-      },
-    },
-    mediaLibrary: {
-      mediaLibrary: {
-        onDelete: 'Are you sure you want to delete selected media?',
-      },
-      mediaLibraryModal: {
-        loading: 'Loading...',
-        noResults: 'No results.',
-        noAssetsFound: 'No assets found.',
-        noImagesFound: 'No images found.',
-        private: 'Private ',
-        images: 'Images',
-        mediaAssets: 'Media assets',
-        search: 'Search...',
-        uploading: 'Uploading...',
-        uploadNew: 'Upload new',
-        deleting: 'Deleting...',
-        deleteSelected: 'Delete selected',
-        chooseSelected: 'Choose selected',
-      },
-    },
-    ui: {
-      errorBoundary: {
-        title: 'Sorry!',
-        details: "There's been an error - please ",
-        reportIt: 'report it!',
-      },
-      settingsDropdown: {
-        logOut: 'Log Out',
-      },
-      toast: {
-        onFailToLoadEntries: 'Failed to load entry: %{details}',
-        onFailToPersist: 'Failed to persist entry: %{details}',
-        onFailToDelete: 'Failed to delete entry: %{details}',
-        onFailToUpdateStatus: 'Failed to update status: %{details}',
-        missingRequiredField:
-          "Oops, you've missed a required field. Please complete before saving.",
-        entrySaved: 'Entry saved',
-        entryPublished: 'Entry published',
-        onFailToPublishEntry: 'Failed to publish: %{details}',
-        entryUpdated: 'Entry status updated',
-        onDeleteUnpublishedChanges: 'Unpublished changes deleted',
-      },
-    },
-    workflow: {
-      workflow: {
-        loading: 'Loading Editorial Workflow Entries',
-        workflowHeading: 'Editorial Workflow',
-        newPost: 'New Post',
-        description:
-          '%{smart_count} entry waiting for review, %{readyCount} ready to go live. |||| %{smart_count} entries waiting for review, %{readyCount} ready to go live. ',
-      },
-      workflowCard: {
-        deleteChanges: 'Delete changes',
-        deleteNewEntry: 'Delete new entry',
-        publishChanges: 'Publish changes',
-        publishNewEntry: 'Publish new entry',
-      },
-      workflowList: {
-        onDeleteEntry: 'Are you sure you want to delete this entry?',
-        onPublishingNotReadyEntry:
-          'Only items with a "Ready" status can be published. Please drag the card to the "Ready" column to enable publishing.',
-        onPublishEntry: 'Are you sure you want to publish this entry?',
-        draftHeader: 'Drafts',
-        inReviewHeader: 'In Review',
-        readyHeader: 'Ready',
-        currentEntries: '%{smart_count} entry |||| %{smart_count} entries',
-      },
-    },
-  };
-}
+export function getPhrases() {
+  return {
+    app: {
+      header: {
+        content: 'Contents',
+        workflow: 'Workflow',
+        media: 'Media',
+        quickAdd: 'Quick add',
+      },
+      app: {
+        errorHeader: 'Error loading the CMS configuration',
+        configErrors: 'Config Errors',
+        checkConfigYml: 'Check your config.yml file.',
+        loadingConfig: 'Loading configuration...',
+        waitingBackend: 'Waiting for backend...',
+      },
+      notFoundPage: {
+        header: 'Not Found',
+      },
+    },
+    collection: {
+      sidebar: {
+        collections: 'Collections',
+        searchAll: 'Search all',
+      },
+      collectionTop: {
+        viewAs: 'View as',
+        newButton: 'New %{collectionLabel}',
+      },
+      entries: {
+        loadingEntries: 'Loading Entries',
+        cachingEntries: 'Caching Entries',
+        longerLoading: 'This might take several minutes',
+      },
+    },
+    editor: {
+      editorControlPane: {
+        widget: {
+          required: '%{fieldLabel} is required.',
+          regexPattern: "%{fieldLabel} didn't match the pattern: %{pattern}.",
+          processing: '%{fieldLabel} is processing.',
+        },
+      },
+      editor: {
+        onLeavePage: 'Are you sure you want to leave this page?',
+        onUpdatingWithUnsavedChanges:
+          'You have unsaved changes, please save before updating status.',
+        onPublishingNotReady: 'Please update status to "Ready" before publishing.',
+        onPublishingWithUnsavedChanges: 'You have unsaved changes, please save before publishing.',
+        onPublishing: 'Are you sure you want to publish this entry?',
+        onDeleteWithUnsavedChanges:
+          'Are you sure you want to delete this published entry, as well as your unsaved changes from the current session?',
+        onDeletePublishedEntry: 'Are you sure you want to delete this published entry?',
+        onDeleteUnpublishedChangesWithUnsavedChanges:
+          'This will delete all unpublished changes to this entry, as well as your unsaved changes from the current session. Do you still want to delete?',
+        onDeleteUnpublishedChanges:
+          'All unpublished changes to this entry will be deleted. Do you still want to delete?',
+        loadingEntry: 'Loading entry...',
+      },
+      editorToolbar: {
+        publishing: 'Publishing...',
+        publish: 'Publish',
+        published: 'Published',
+        publishAndCreateNew: 'Publish and create new',
+        deleteUnpublishedChanges: 'Delete unpublished changes',
+        deleteUnpublishedEntry: 'Delete unpublished entry',
+        deletePublishedEntry: 'Delete published entry',
+        deleteEntry: 'Delete entry',
+        saving: 'Saving...',
+        save: 'Save',
+        deleting: 'Deleting...',
+        updating: 'Updating...',
+        setStatus: 'Set status',
+        backCollection: ' Writing in %{collectionLabel} collection',
+        unsavedChanges: 'Unsaved Changes',
+        changesSaved: 'Changes saved',
+        draft: 'Draft',
+        inReview: 'In review',
+        ready: 'Ready',
+        publishNow: 'Publish now',
+      },
+      editorWidgets: {
+        unknownControl: {
+          noControl: "No control for widget '%{widget}'.",
+        },
+        unknownPreview: {
+          noPreview: "No preview for widget '%{widget}'.",
+        },
+      },
+    },
+    mediaLibrary: {
+      mediaLibrary: {
+        onDelete: 'Are you sure you want to delete selected media?',
+      },
+      mediaLibraryModal: {
+        loading: 'Loading...',
+        noResults: 'No results.',
+        noAssetsFound: 'No assets found.',
+        noImagesFound: 'No images found.',
+        private: 'Private ',
+        images: 'Images',
+        mediaAssets: 'Media assets',
+        search: 'Search...',
+        uploading: 'Uploading...',
+        uploadNew: 'Upload new',
+        deleting: 'Deleting...',
+        deleteSelected: 'Delete selected',
+        chooseSelected: 'Choose selected',
+      },
+    },
+    ui: {
+      errorBoundary: {
+        title: 'Sorry!',
+        details: "There's been an error - please ",
+        reportIt: 'report it!',
+      },
+      settingsDropdown: {
+        logOut: 'Log Out',
+      },
+      toast: {
+        onFailToLoadEntries: 'Failed to load entry: %{details}',
+        onFailToPersist: 'Failed to persist entry: %{details}',
+        onFailToDelete: 'Failed to delete entry: %{details}',
+        onFailToUpdateStatus: 'Failed to update status: %{details}',
+        missingRequiredField:
+          "Oops, you've missed a required field. Please complete before saving.",
+        entrySaved: 'Entry saved',
+        entryPublished: 'Entry published',
+        onFailToPublishEntry: 'Failed to publish: %{details}',
+        entryUpdated: 'Entry status updated',
+        onDeleteUnpublishedChanges: 'Unpublished changes deleted',
+        onFailToAuth: '%{details}',
+      },
+    },
+    workflow: {
+      workflow: {
+        loading: 'Loading Editorial Workflow Entries',
+        workflowHeading: 'Editorial Workflow',
+        newPost: 'New Post',
+        description:
+          '%{smart_count} entry waiting for review, %{readyCount} ready to go live. |||| %{smart_count} entries waiting for review, %{readyCount} ready to go live. ',
+      },
+      workflowCard: {
+        deleteChanges: 'Delete changes',
+        deleteNewEntry: 'Delete new entry',
+        publishChanges: 'Publish changes',
+        publishNewEntry: 'Publish new entry',
+      },
+      workflowList: {
+        onDeleteEntry: 'Are you sure you want to delete this entry?',
+        onPublishingNotReadyEntry:
+          'Only items with a "Ready" status can be published. Please drag the card to the "Ready" column to enable publishing.',
+        onPublishEntry: 'Are you sure you want to publish this entry?',
+        draftHeader: 'Drafts',
+        inReviewHeader: 'In Review',
+        readyHeader: 'Ready',
+        currentEntries: '%{smart_count} entry |||| %{smart_count} entries',
+      },
+    },
+  };
+}