multiClientMiddleware broken? Cannot read property 'request' of undefined

[Slodin]

My code works with axiosMiddleware, but after I switched over to multiclent, everything went wrong. It keep on giving me

Cannot read property 'request' of undefined

It seems like it's not getting the request from the redux action in payload.

import {multiClientMiddleware} from 'redux-axios-middleware';

export default ReduxStore = createStore(
    rootReducer, 
    applyMiddleware(
        multiClientMiddleware(
            AxiosClient
        )
    )
)

AxiosClient = {
    default: {
      client: axios.create({
        baseURL: baseUrl,
        timeout: 6000,
        responseType: 'json',
      })
      options: defaultConfig
    },
    googleMaps: {
      client: axios.create({
        baseURL: baseGoogleMapAPI,
        timeout: 6000,
        responseType: 'json'
      })
    }
  }

const defaultConfig = {
  interceptors: {
    request: [{
      success: function ({getState, dispatch, getSourceAction}, req) {
        handleTokenAuth(req);
      },
      error: function ({getState, dispatch, getSourceAction}, error) {
        Promise.reject(error)
      }
    }
    ],
    response: [{
      success: function ({getState, dispatch, getSourceAction}, req) {
        handleAxiosSuccess(req);
      },
      error: function ({getState, dispatch, getSourceAction}, error) {
        handleAxiosError(error);
      }
    }
    ]
  }
}

Redux action, it pretty much dies here

export function getUser(){
    return {
        type: "GET_USER",
        payload: {
            client: 'default',
            request: {
                method: 'GET',
                url: '/auth/user'
            }
        }
    };
}