issue for avast emergency update ??

Yesterday I install avast free last version
20.2.2401(Build 20.2.5130.571)
My window7

I can see in task manager
process “avast emergency update” it run for long time I think 3-4 Hour (until I shutdown mycom)
why it not close itself after update complete
in normal ?? ??? ???

Repair Avast:

  1. Avast GUI → Settings → Troubleshooting
  2. Click on ‘REPAIR APP’.
  3. Follow instructions.
  4. Reboot.