Hi there! I see you're having trouble with the Magic Eraser feature in Pixelcut AI Photo Editor on your Ubuntu system. Let's get that sorted out for you.

To start, could you tell me a bit more about what's happening? For example:
- Are you able to open the Magic Eraser tool at all?
- When you try to use it, does it not respond, or does it remove objects incorrectly?
- Is this issue happening with all photos or just specific ones?
- Also, are you using Pixelcut through a web browser or a desktop app?

With that info, I can guide you better.

Meanwhile, here are some basic steps to try that might help:

1. Check Internet Connection: Pixelcut’s AI tools like Magic Eraser rely on cloud processing, so make sure your internet connection is stable.

2. Browser Compatibility: If you're using the web version, try using a modern browser like Chrome or Firefox up to date. Sometimes outdated browsers cause features to fail.

3. Clear Cache/Cookies: Browser cache or cookies sometimes interfere. Clearing them could refresh the tool's function.

4. Photo Quality & Size: Ensure your photo has a clear focus and isn’t too large or too small for the tool. Sometimes, the AI struggles with very complex or very low-res images.

5. Try Another Photo: Test the Magic Eraser on a couple of different images to see if the problem is with specific photos.

If after these you’re still facing issues, I can guide you to check more advanced settings or see if there might be a known backend problem.

Let me know what you find out or if you already tried any of the above!