A video editing tool developed by Microsoft, designed to make video creation easy and accessible for everyone.
Are you using an app or through browser?
If you are using an app, try in browser: https://app.clipchamp.com/
If it's working in browser, check if you have enough disk space.
You can try to repair clipchamp in Settings, Apps, Installed apps. Find Microsoft Clipchamp, click on "...", advanced options and try to repair.