How to remove tag with 0 item?

[Sulfonamide 0]

By using API /Tag, I can get all tags with their item number in my Emby server.

I find that there are some tags with 0 item (it means the tag has been added to some media but finally removed). How to remove them?

I have tried several ways:

• There is no APT of DELETE /Tag.
• Setting / Database / Vacuum the database on the next Emby Server startup
• Setting / Scheduled Tasks / Vacuum Database

But not useful. Tags with 0 item still exists.

What should I do?

[Sulfonamide 0]

Tags with 0 item still be removed automatically after several hours.