In this [issue](https://github.com/facebook/react/issues/23373), when you navigate to [this app](https://next-rsc-notes.vercel.app/note/1646289027680) and inspect the sidebar in the components tab, you will get this error:

![image](https://user-images.githubusercontent.com/2735514/158241727-64eba8f9-5ac2-4aa7-bffa-ff9b3174a261.png)

 This is a user error. One of the components in the user's app thrown. However, the UI for this is confusing, because it seems like it's a DevTools error. We've gotten a lot of bug reports like this, and it would be good to differentiate between DevTools bugs and bugs in the app. For this task:

- [ ] Build the React DevTools extension locally (instructions [here](https://github.com/facebook/react/tree/main/packages/react-devtools-extensions)) and reproduce the error
- [ ] Figure out a way to have the front end be able to differentiate whether the error is a error within DevTools or within the user's app
- [ ] Design/implement a better UI to help app developers distinguish between these two cases
],
        }
      `);
    });
    it('during layout (mount) get recorded', async () => {
      const Example = () => {
        // Note we only test mount because once the component unmounts,
        // it is no longer in the store and warnings are ignored.
        React.useLayoutEffect(() => {
          console.error('test-only: useLayoutEffect error');
          console.warn('test-only: useLayoutEffect warning');
        }, []);
        return null;
      };
      const container = document.createElement('div');
      await utils.withErrorsOrWarningsIgnored(['test-only:'], async () => {
        await utils.actAsync(() =>
          legacyRender(<Example repeatWarningCount={1} />, container),
        );
      });
      const data = await getErrorsAndWarningsForElementAtIndex(0);
      expect(data).toMatchInlineSnapshot(`
        Object {
          "errors": Array [
            Array [
              "test-only: useLayoutEffect error",
              1,
            ],
          ],
          "warnings": Array [