Initialization of backend wasm failed

[DaiHaoguang3151]

code:
`import React, { useState, useRef } from "react";
import * as faceapi from 'face-api.js'
import * as tf from '@tensorflow/tfjs-core';
import { setWasmPaths } from "@tensorflow/tfjs-backend-wasm";

const App = () => {
const [session, setSession] = useState(null);
const [loading, setLoading] = useState("Loading OpenCV.js...");

async function init() {
    // setWasmPaths('https://cdn.jsdelivr.net/npm/@tensorflow/tfjs-backend-wasm/dist/');
    // setWasmPaths('../node_modules/@tensorflow/tfjs-backend-wasm/dist/');
    setWasmPaths(`${process.env.PUBLIC_URL}/static/js/`);
    await tf.setBackend('wasm');
    await tf.ready();
    console.log(tf.getBackend())  // webgl
}
init();

cv["onRuntimeInitialized"] = async () => {
    await faceapi.nets.mtcnn.loadFromUri("/model");
    await faceapi.nets.faceLandmark68Net.loadFromUri("/model");
    await faceapi.nets.faceRecognitionNet.loadFromUri("/model");

    console.log("backend==> ", tf.getBackend())  // webgl
    setLoading(false);
}

console.log("here backend==> ", tf.getBackend())  // wasm

return (
    <div className="App">
        
    </div>
);

};

export default App;`

dependencies:
"@tensorflow/tfjs": "^4.15.0",
"@tensorflow/tfjs-backend-wasm": "^4.15.0",
"@testing-library/jest-dom": "^5.14.1",
"@testing-library/react": "^13.0.0",
"@testing-library/user-event": "^13.2.1",
"face-api.js": "^0.22.2",
"onnxruntime-web": "^1.11.0",
"react": "^18.1.0",
"react-dom": "^18.1.0",
"react-scripts": "5.0.1",
"web-vitals": "^2.1.0"