Strange disconnection

Hi guys,

I’ve got this installation:
– Asustor NAS with Mysql and SMB share
– Intel Nuc with libreelec and RPI3 with OSMC both on kodi 17 build
– Shared library on the Asustor Mysql database system

The problem is that after i watched a TV episode and return to the interface i’ve got no fanart and when i try to launch another video i’ve got the loading indication but nothing happens.
That happens with Libreelec and OSMC the same.
The Mediaplayers still have network connection, internet, etc and i see them on the network.

Yesterday i was lazy and installed Kore on my android phone i still get the no fanart and impossible to load a video by the remote but when i click on the TV episode i want to launch with Kore app the video just launch without any trouble.

I tried my luck on libreelec forum and it appears that in the log i got a disconnection error but the video don’t hang or crash at any moment.
To launch the next video i must restart my NUC or RPI3 or use Kore on my phone.

Does anyone would have a clue on what the hell is going on ?