TS Error in Redux Toolkit - Argument of type 'object' is not assignable to parameter of type 'WritableDraft'

Question

type UserData = {
    accessToken: string;
    id: number;
    ldap: string;
    roles: [];
    tokenType: string;
};

type LoginState = {
  loading: 'idle' | 'pending' | 'succeeded' | 'failed';
  data: UserData[];
};

const initialState: LoginState = {
  loading: 'idle',
  data: [],
};

const userSlice = createSlice({
  name: 'user',
  initialState,
  reducers: {},
  extraReducers: builder => {
    builder
      .addCase(authUser.pending, state => {
        state.loading = 'pending';
      })
      .addCase(authUser.fulfilled, (state, action) => {
        state.loading = 'succeeded';
        state.data.push(action.payload);
      })
      .addCase(authUser.rejected, state => {
        state.loading = 'failed';
      });
  },
});

I am getting a TS error on this line -

state.data.push(action.payload)

This is the error that I am getting -

Not sure what I am missing. I am relatively new to TS.