Set a default content from database in react-draft-wysiwyg editor - reactjs

Question

I am creating a blog website in which I am embedding react-draft-wysiwyg editor. I am facing problem when the user has to update the blog. When I click the update button the content is gone. I looked into many solutions but I couldn't make it work.
This is my code
import axios from "axios";
import React, { useContext, useEffect, useState } from "react";
import { useLocation } from "react-router";
import { Link } from "react-router-dom";
import { Context } from "../../context/Context";
import "./singlePost.css";
import { EditorState, ContentState, convertFromHTML } from 'draft-js';
import { Editor } from 'react-draft-wysiwyg';
import { convertToHTML } from 'draft-convert';
import DOMPurify from 'dompurify';
import 'react-draft-wysiwyg/dist/react-draft-wysiwyg.css';
import Parser from 'html-react-parser';
export default function SinglePost() {
const location = useLocation();
const path = location.pathname.split("/")[2];
const [post, setPost] = useState({});
const PF = "http://localhost:5000/images/";
const { user } = useContext(Context);
const [title, setTitle] = useState("");
const [desc, setDesc] = useState("");
const [updateMode, setUpdateMode] = useState(false);
useEffect(() => {
const getPost = async () => {
const res = await axios.get("/posts/" + path);
setPost(res.data);
setTitle(res.data.title);
setDesc(res.data.desc);
};
getPost();
}, [path]);
const handleDelete = async () => {
try {
await axios.delete(`/posts/${post._id}`, {
data: { username: user.username },
});
window.location.replace("/");
} catch (err) {}
};
// updating post
const handleUpdate = async () => {
try {
await axios.put(`/posts/${post._id}`, {
username: user.username,
title,
desc,
});
setUpdateMode(false)
} catch (err) {}
};
const [editorState, setEditorState] = useState(
() => EditorState.createWithContent(
ContentState.createFromBlockArray(
convertFromHTML(desc)
)
),
);
const [convertedContent, setConvertedContent] = useState(null);
const handleEditorChange = (state) => {
setEditorState(state);
convertContentToHTML();
}
const convertContentToHTML = () => {
let currentContentAsHTML = convertToHTML(editorState.getCurrentContent());
setConvertedContent(currentContentAsHTML);
setDesc(currentContentAsHTML);
}
const createMarkup = (html) => {
return {
__html: DOMPurify.sanitize(html)
}
}
return (
<div className="singlePost">
<div className="singlePostWrapper">
{post.photo && (
<img src={PF + post.photo} alt="" className="singlePostImg" />
)}
{updateMode ? (
<input
type="text"
value={title}
className="singlePostTitleInput"
autoFocus
onChange={(e) => setTitle(e.target.value)}
/>
) : (
<h1 className="singlePostTitle">
{title}
{post.username === user?.username && (
<div className="singlePostEdit">
<i
className="singlePostIcon far fa-edit"
onClick={() => setUpdateMode(true)}
></i>
<i
className="singlePostIcon far fa-trash-alt"
onClick={handleDelete}
></i>
</div>
)}
</h1>
)}
<div className="singlePostInfo">
<span className="singlePostAuthor">
Author:
<Link to={`/?user=${post.username}`} className="link">
<b> {post.username}</b>
</Link>
</span>
<span className="singlePostDate">
{new Date(post.createdAt).toDateString()}
</span>
</div>
{updateMode ? (
// <textarea
// className="singlePostDescInput"
// value={desc}
// onChange={(e) => setDesc(e.target.value)}
// />
<Editor
contentState={desc}
editorState={editorState}
onEditorStateChange={handleEditorChange}
wrapperClassName="wrapper-class"
editorClassName="editor-class"
toolbarClassName="toolbar-class"
/>
) : (
<p className="singlePostDesc">{Parser(desc)}</p>
)}
{updateMode && (
<button className="singlePostButton" onClick={handleUpdate}>
Update
</button>
)}
</div>
</div>
);
}
I want to display desc which is saved in MongoDB database when the user clicks on update button.
The following part is what I tried to do but didn't work.
const [editorState, setEditorState] = useState(
() => EditorState.createWithContent(
ContentState.createFromBlockArray(
convertFromHTML(desc)
)
),
);
I am getting warning in this:
react.development.js:220 Warning: Can't call setState on a component that is not yet mounted. This is a no-op, but it might indicate a bug in your application. Instead, assign to this.state directly or define a state = {}; class property with the desired state in the r component.
Please help