reinvest/frontend/src/components/Portfolio.js

import React, { Component } from "react";
import "./assets/Portfolio.css";
class Portfolio extends Component {
  constructor(props) {
    super(props);
    this.state = { apiResponse: "" };
  }
  callAPI() {
    fetch("http://localhost:9000/FETCHURL")
      .then((res) => res.text())
      .then((res) => this.setState()({ apiresponse: res }))
      .catch((err) => err);
  }
  componentDidMount() {
    this.callAPI();
  }
  render() {
    return (
      <div class="container">
        <h1 class="d-flex justify-content-center m-2 p-4">Portfolio</h1>
        <h1>{this.state.apiResponse}</h1>
      </div>
    );
  }
}

export default Portfolio;