[ZendTo] Drop-off/ClamAV error

[news at mailoo.xyz]

Hi all, Hi Jules,
Hope you're going well.

I'm running a fresh ZenTo instance on Debian 10. When dropping-off a 
file, I'm getting this error:

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Error: Virus scan of dropped-off files  /var/zendto/incoming/phpr7iV2U 
for francois.techxa failed with /var/zendto/incoming/phpr7iV2U: Not a 
regular file ERROR  ----------- SCAN SUMMARY ----------- Infected files: 
0 Total errors: 1 Time: 0.000 sec (0 m 0 s)
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As said in the FAQ, I've then relaunched the CLAMAV script 
(Ubuntu-Debian/3-clamav.sh) but the issue persists. Here is the output:

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Sun Mar 22 18:22:24 2020 -> ClamAV update process started at Sun Mar 22 
18:22:24 2020
Sun Mar 22 18:22:24 2020 -> daily.cld database is up to date (version: 
25759, sigs: 2234135, f-level: 63, builder: raynman)
Sun Mar 22 18:22:24 2020 -> main.cvd database is up to date (version: 
59, sigs: 4564902, f-level: 60, builder: sigmgr)
Sun Mar 22 18:22:24 2020 -> bytecode.cvd database is up to date 
(version: 331, sigs: 94, f-level: 63, builder: anvilleg)
Allowing ClamAV to read Apache files
Allowing ClamAV through AppArmor to read ZendTo uploads
No need, already done.
Unloading AppArmor profiles
[ ok ] Starting apparmor (via systemctl): apparmor.service.
[ ok ] Reloading apparmor configuration (via systemctl): 
apparmor.service.
Starting ClamAV and freshclam daemons
ClamAV has been setup for you to work with ZendTo.
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Any idea on what I'm supposed to do now ?
Could someone also show me his ownership and permissions settings on the 
"/var/zendto/incoming" folder just to compare ?

Thank you in advance and take care.

Francois