I am using RTK query for comunication with API. When mutation fails, I need dispatch some alert, like follows:

const [addPost, {
    isError,
    error,
}] = useAddPostMutation()
...
useEffect(() => {
    if (isError) {
        dispatch(setAlert(error))
    }
}, [isError])

It works ok.

But now, I would like to omit useEffect and I found in official docs (https://redux-toolkit.js.org/rtk-query/usage/error-handling) this code.

addPost({ id: 1, name: 'Example' })
  .unwrap()
  .then((payload) => console.log('fulfilled', payload))
  .catch((error) => console.error('rejected', error))

then block works ok, but there is some problem with catch block. I got this error message:

rejected TypeError: description(...) is undefined

I tried it without unwrap(), it falls every time into then block and get same error.

addPost({ id: 1, name: 'Example' })
  .then((payload) => console.log('fulfilled', payload))
  .catch((error) => console.error('rejected', error))

fulfilled 
Object { error: TypeError }