Bug: Unexpected Warning "DevTools failed to load SourceMap" in Chrome

[xabra]

I get three warnings when React DevTools is installed in Chrome. Other people have reported this but I have not seen a good solution. (I dont use an ad blocker)

DevTools failed to load SourceMap: Could not load content for chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/injectGlobalHook.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
DevTools failed to load SourceMap: Could not load content for chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/react_devtools_backend.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
DevTools failed to load SourceMap: Could not load content for chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/contentScript.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME

Google Chrome Version 86.0.4240.111 (Official Build) (64-bit)

React version:
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-router-dom": "^5.2.0",
"react-scripts": "3.4.3"

Also using Apollo Client

The current behavior

The above warnings are generated on every render for every page.

The expected behavior

No warnings

Files

----index.js file ----
import React from "react";
import { render } from "react-dom";
import { BrowserRouter } from "react-router-dom";
import {
ApolloClient,
InMemoryCache,
createHttpLink,
ApolloProvider,
} from "@apollo/client";

// Top level view. Does the setup of the Apollo Provider and renders the App
import App from "./App";

const link = createHttpLink({
uri: "http://localhost:4000",
headers: { authorization: localStorage.getItem("token") },
});
const cache = new InMemoryCache();
const client = new ApolloClient({
link: link,
cache: cache,
});

render( <ApolloProvider client={client}> <BrowserRouter> <div> <App /> </div> </BrowserRouter> </ApolloProvider>,
document.getElementById("root")
);

[bvaughn]

I'm sorry you experienced this bug! 🙇

Looks like this problem was already reported though (#20091) so I'm going to mark this issue as a duplicate and close it.

Thank you~