Open files from Thunderbird

[bass_man]

Hi everybody,
when I receive an attached file (mp3, mp4, wav, etc...) by mail in Thunderbird, I can't open it directly. I have first to save it in a folder (or desktop) before open it with VLC.
If I want to open the attached file from the mail, VLC start, but I obtain the following message :

VCL can't open "file:///tmp/mozilla_user0/name-file.wav" (for example). Verify log messages for more details.

I can't understand why......... even if I have rights on this temporary folder.
And I don't know where are the logs..........

System : Ubuntu 20.04.3 LTS 64 bits
Gnome : 3.36.8
VLC : 3.0.16 Vetinari, installed from snap
All access are allowed.

Any idea and help are welcom
Thank you.

[Rémi Denis-Courmont]

Without logs, I can only guess that the file does not exist.

[bass_man]

No. The file does exist, I can see him in the folder.
Tell me where can I find the logs ?...
Is there any parameter to set the folder logs in VLC ?...

[bass_man]

I saw something interesting : since Thunderbird 91.5.0 update version, the temporary folder is /tmp/ for all attached files.
PDF, txt and many others can be open, but no mp3, mp4, wav... files...