當(dāng)我使用 fetch post 方法時(shí)，我收到此警告，如何取消 useEffect 清理函數(shù)中的所有訂閱和異步任務(wù)。使用我的 Post 方法。警告：無法對(duì)已卸載的組件執(zhí)行 React 狀態(tài)更新。這是一個(gè)空操作，但它表明應(yīng)用程序中存在內(nèi)存泄漏。要修復(fù)此問題，請(qǐng)取消 useEffect 清理函數(shù)中的所有訂閱和異步任務(wù)。import React from "react";import { useHistory } from "react-router-dom";import { UPLOAD_PRESET, CLOUD_NAME, SERVER_API } from "../../config";const uploadImage = async (file) => {  const url = `https://api.cloudinary.com/v1_1/${CLOUD_NAME}/upload`;  const formData = new FormData();  formData.append("file", file);  formData.append("upload_preset", UPLOAD_PRESET);  const res = await fetch(url, {    method: "POST",    body: formData,  });  if (!res.ok) {    throw new Error(`Can't upload image. ${res.status}`);  }  const data = await res.json();  return await data.eager[0].secure_url;};const createAlbum = async (data) => {  const res = await fetch(`${SERVER_API}/api/v1/albums`, {    method: "POST",    body: JSON.stringify(data),    headers: {      "Content-Type": "application/json",    },  });  if (!res.ok) {    throw new Error(`An error has occurred: ${res.status}`);  }  const json = await res.json();  return json.data._id;};const Form = ({ file, loading, setError, album, color, children }) => {  let history = useHistory();  const clearError = () => setError("");  const handleSubmit = async (e) => {    e.preventDefault();    clearError();    try {      if (!file) {        throw new Error("Please select a file to add.");      }      if (!album.trim("") || !color.trim()) {        throw new Error("Please enter all the field values.");      }      loading(true);      const fileUrl = await uploadImage(file);      const data = {        name: album,        bckImgUrl: fileUrl,        color: color,      };      const albumId = await createAlbum(data);      history.push(`/albums/${albumId}`);    } catch (error) {      setError(error.message);    } finally {      loading(false);    }  };  return <form onSubmit={handleSubmit}>{children}</form>;};export default Form;