You attempt to approve an asset and receive a "Cannot update a stale object" error.
This error means that a newer version of the asset exists than the one you started with. This occurs most often with large teams or if you edit an asset in multiple tabs. When you edit an asset, it creates a draft. Another attempt to edit the asset while the previous draft is open would create a new draft, which then causes your first draft to become "stale." Refreshing your screen should resolve this issue and allow you to approve the asset.