Can't not activate middleware in RTK Query

Question

I'm trying to connect middleware via an API so I assume that when I get a 401 error from my endpoints I'll be able to see my console.log, but that's not happening. I don't even see "middleware activated" Where am I wrong? My ultimate goal is to catch the 401 error and refresh the token. My endpoints are connected via injectEndpoints in separate files.

My store:

import { configureStore, getDefaultMiddleware } from "@reduxjs/toolkit";
import userReducer from "./user/slice";
import modelsReducer from "./models/slice";

//API
import { bplexApi } from "../api_v2";

const store = configureStore({
  reducer: {
    user: userReducer,
    models: modelsReducer,
    //API
    [bplexApi.reducerPath]: bplexApi.reducer,
  },

  middleware: (getDefaultMiddleware) => {
    return getDefaultMiddleware().concat(bplexApi.middleware);
  },
});

export default store;

My index.js:

export const bplexApi = createApi({
  reducerPath: "bplexApi",
  baseQuery: fetchBaseQuery({
    baseUrl: "/api/v1",
    prepareHeaders: (headers) => {
      const token = getToken(); 
      if (token) {
        headers.set("Authorization", `Token ${token}`);
      }
      return headers;
    },
  }),
  endpoints: () => ({}),

  middleware: (getDefaultMiddleware) => {
    console.log("middleware activated");
    return getDefaultMiddleware().concat({
      onError: async (error, dispatch, api) => {
        console.log("aaaa");
        const { status } = error;
        if (status === 401) {
          console.log("Error here");
          throw error;
        }
        throw error; 
      },
    });
  },
});