ClamTK does not work (22.10)

Support & Help Requests
1

Hi,
I am trying the latest version 22.10 on VirtualBox. I do not find troubles so far except one thing.
I cannot get any signature of anti-virus for ClamTK.

I followed a way I know well : Before setting automatic upgrading, I tried manual upgrading.
But in vain.
Please let me know how to get or upgrade anti-virus signatures for ClamTK on 22.10.
(For 20.04 or 22.04 ClamTK has no trouble.)

2

Today I tried again ClamTK. Now it works normally.
I wonder why it did not work when trying previously.