React Native state getting empty after action REDUX_STORAGE_SAVE - reactjs

Question

I am new in react native and I am kind of stuck in redux. I am trying to fetch the vehicles from the api endpoint, I am using redux-saga, the request sent, successfully fetches the data and dispathes the FETCH_VEHICLE_SUCCESS action. and state gets updated in redux store. But after that an action(REDUX_STORAGE_SAVE as shown in the image below) is automatically triggered and it empties the state i.e vehicles(refer to the image below). Why is it happening?
I am using redux-logger for logging, as shown on the picture below the vehicles object gets empty.
saga.js
function fetchVehicleCall() {
console.log('here');
return new Promise((resolve, reject) => {
RegisterHelper.fetchAllVehicles()
.then(res => {
console.log('now');
resolve(res);
})
.catch(err => reject(err));
});
}
function* fetchVehicleRequest() {
while (true) {
yield take(GET_VEHICLE_REQUEST);
try {
const response = yield call(fetchVehicleCall);
yield put(fetchVehicleSuccess(response));
console.log('SAGA FETCH SUCCESS: ', response);
} catch (err) {
console.log('SAGA FETCH ERR: ', err);
}
}
}
export default function* root() {
yield fork(fetchVehicleRequest);
}
actions.js
export function fetchVehicleSuccess(vehicles) {
return {
type: FETCH_VEHICLE_SUCCESS,
vehicles,
};
}
reducer.js
case FETCH_VEHICLE_SUCCESS:
return Object.assign({}, state, {
vehicles: action.vehicles,
});