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
removeRootPseudoKey(currentRootID);
        recordUnmount(current, false);
      }
    } else {
       M
      setRootPseudoKey(currentRootID, current);
      mountFiberRecursively(current, null, false, false);
    }
    if (isProfiling && isProfilingSupported) {
      if (!shouldBailoutWithPendingOperations()) {
        const commitProfilingMetadata = ((rootToCommitProfilingMetadataMap: any): CommitProfilingMetadataMap).get(
          currentRootID,
        );
        if (commitProfilingMetadata != null) {
          commitProfilingMetadata.push(
            ((currentCommitProfilingMetadata: any): CommitProfilingData),
          );
        } else {
          ((rootToCommitProfilingMetadataMap: any): CommitProfilingMetadataMap).set(
            currentRootID,
            [((currentCommitProfilingMetadata: any): CommitProfilingData)],
          );
        }
      }
    }
     W
    flushPendingEvents(root);
    if (traceUpdatesEnabled) {
      hook.emit('traceUpdates', traceUpdatesForNodes);
    }