diff --git a/webapp/src/errors.ts b/webapp/src/errors.ts
index a77bfbccd..ba742c424 100644
--- a/webapp/src/errors.ts
+++ b/webapp/src/errors.ts
@@ -8,6 +8,7 @@ import {UserSettings} from './userSettings'
 enum ErrorId {
     TeamUndefined = 'team-undefined',
     NotLoggedIn = 'not-logged-in',
+    InvalidReadOnlyBoard = 'invalid-read-only-board',
     BoardNotFound = 'board-not-found',
 }
 
@@ -79,6 +80,16 @@ function errorDefFromId(id: ErrorId | null): ErrorDef {
         errDef.button1Fill = true
         break
     }
+    case ErrorId.InvalidReadOnlyBoard: {
+        errDef.title = intl.formatMessage({id: 'error.invalid-read-only-board', defaultMessage: 'You don\’t have access to this board. Log in to access Boards.'})
+        errDef.button1Enabled = true
+        errDef.button1Text = intl.formatMessage({id: 'error.go-login', defaultMessage: 'Login'})
+        errDef.button1Redirect = (): string => {
+            return window.location.origin
+        }
+        errDef.button1Fill = true
+        break
+    }
     default: {
         errDef.title = intl.formatMessage({id: 'error.unknown', defaultMessage: 'An error occurred.'})
         errDef.button1Enabled = true
diff --git a/webapp/src/store/initialLoad.ts b/webapp/src/store/initialLoad.ts
index 0e62420fb..d47d19670 100644
--- a/webapp/src/store/initialLoad.ts
+++ b/webapp/src/store/initialLoad.ts
@@ -48,6 +48,11 @@ export const initialReadOnlyLoad = createAsyncThunk(
             client.getAllBlocks(boardId),
         ])
 
+        // if no board, read_token invalid
+        if (!board) {
+            throw new Error(ErrorId.InvalidReadOnlyBoard)
+        }
+        
         return {board, blocks}
     },
 )