Having an error while migrating mobx to mobx-state-tree and store.create({})

GithubStore.js

/**
 * UPDATED ERROR WITH MOBX-STATE-TREE v0.6.1
 **/

// Store that throws this error.
import { runInAction } from 'mobx';
import { types } from 'mobx-state-tree';

const GithubStore = types.model(
  'GithubStore',
  {
    searchName: types.string,
    user: types.frozen, // Object with all the user data that comes from the Github API Fetch
    repos: types.array, // Array of Repositories that comes from the Github API Fetch
    fetchingData: types.boolean
  },
  {
    changeUserToSearchFor(username) {
      this.searchName = username;
    },
    async fetchFromGithub(endpoint) {
      const url = `https://api.github.com${endpoint}?client_id=my_client_id&client_secret=my_secret_id`;
      const response = await fetch(url);
      return await response.json();
    },
    async searchForUser() {
      if (
        !this.searchName ||
        (this.user && this.searchName === this.user.login)
      )
        return;
      this.fetchingData = true;
      const [user, repos] = await Promise.all([
        this.fetchFromGithub(`/users/${this.searchName}`),
        this.fetchFromGithub(`/users/${this.searchName}/repos`)
      ]);
      runInAction("Update State after fetching Github's Data", () => {
        this.user = user;
        this.repos = repos;
        this.fetchingData = false;
      });
    }
  }
);

export default GithubStore;

//Creating the Store with the following code also causes an error.
const githubStore = GithubStore.create({
  searchName: '',
  user: {},
  repos: [],
  fetchingData: false
});

bundle.js:50802 Uncaught Error: [mobx-state-tree] Error while converting `{"searchName":"","user":{},"repos":[],"fetchingData":false}` to `GithubStore`:
at path "/repos" snapshot `[]` is not assignable  (View properties should not be provided in the snapshot).
    at invariant (http://localhost:3001/static/js/bundle.js:50802:16)
    at Object.fail (http://localhost:3001/static/js/bundle.js:50794:6)
    at Object.typecheck (http://localhost:3001/static/js/bundle.js:51049:18)
    at ObjectType.ComplexType.create (http://localhost:3001/static/js/bundle.js:50951:25)
    at executeAction (http://localhost:3001/static/js/bundle.js:37392:20)
    at ObjectType.res [as create] (http://localhost:3001/static/js/bundle.js:37383:17)
    at Object.<anonymous> (http://localhost:3001/static/js/bundle.js:10875:37)
    at __webpack_require__ (http://localhost:3001/static/js/bundle.js:556:30)
    at fn (http://localhost:3001/static/js/bundle.js:87:20)
    at Object.<anonymous> (http://localhost:3001/static/js/bundle.js:591:19)