How to use the axios.get function in axios

mounted () {
    axios.get('/api/portfolios').then(res => {
      this.items = res.data.map(e => ({id: e.id, name: e.name}))
    }, error => {
      console.error(error)
    })
  }
}

loadRecords() {
    this.setState({ ...this.state, loading: true });

    axios
      .get(this.props.apiRoute, {
        headers: {
          'Content-Type': 'application/json',
        },
      })
      .then(
        resp => {
          let response = resp.data as Array;

          console.log(response);

          let mapper = new LinkTypeMapper();

          let linkTypes: Array = [];

          response.forEach(x => {

loadRecords(query: string = '') {
    this.setState({ ...this.state, searchValue: query });
    let searchEndpoint =
      Constants.ApiEndpoint + ApiRoutes.SpaceSpaceFeatures + '?limit=100';

    if (query) {
      searchEndpoint += '&query=' + query;
    }

    axios
      .get>(searchEndpoint, {
        headers: GlobalUtilities.defaultHeaders(),
      })
      .then(response => {
        let viewModels: Array = [];
        let mapper = new SpaceSpaceFeatureMapper();

        response.data.forEach(x => {
          viewModels.push(mapper.mapApiResponseToViewModel(x));
        });

        this.setState({
          records: viewModels,
          filteredRecords: viewModels,
          loading: false,
          loaded: true,

asyncCheckEmail = (email) => {
        return Axios.get('http://localhost:5000/email_exists/' + email)
    }

getUser() {
    const config = this.getRequestConfig();
    return axios.get('/api/auth/me/', config).then(response => {
      Object.assign(this.user, response.data);
      return this.user;
    });
  },
  register(user) {

export function getKPIData(id) {
  return axios.get(
    `${config.API_URL}/dashboard/kpis/${id}/data?silentError=true`
  );
}

    get: url => axios.get(url, config),
    post: (url, data) => axios.post(url, data, config),

const componentWillMount = function componentWillMount() {

    get('/weather').then(response => {
        this.setState({ weather: camelizeKeys(response.data).report });
    });

};

api.settings.hasMongoDBTools = () => {
  return axios.get('/api/v1/backup/hastools').then(res => {
    return res.data
  })
}
api.settings.fetchBackups = () => {

loadRecords(query: string = '') {
    this.setState({ ...this.state, searchValue: query });
    let searchEndpoint =
      Constants.ApiEndpoint + ApiRoutes.VehicleCapabilities + '?limit=100';

    if (query) {
      searchEndpoint += '&query=' + query;
    }

    axios
      .get>(searchEndpoint, {
        headers: GlobalUtilities.defaultHeaders(),
      })
      .then(response => {
        let viewModels: Array = [];
        let mapper = new VehicleCapabilitiesMapper();

        response.data.forEach(x => {
          viewModels.push(mapper.mapApiResponseToViewModel(x));
        });

        this.setState({
          records: viewModels,
          filteredRecords: viewModels,
          loading: false,
          loaded: true,