message: CR: describe /login-error handling
diff: @@ -53,3 +53,9 @@ export async function getTodos() {
  ### Error handling
  If a login fails due to some reason (e.g. misconfiguration of the login provider) the user will be redirected to /login-error.
  +
  +A login-error page is not provided, for example if using in a React app with a react-router the page should be handled by a
  +
  +```jsx
  +<Route exact path='/login-error'>
  +```
  