[Klojum]

Please forward this message to Kodi developers to fix this bug and bring a new update

Sorry, but this "demand" can only be countered with a resounding 'hahahaha'.
Or wait... Why don't you forward your (post) address to us, so we can send a courier?

Here is a tip: Try a more comprehensible tone of voice in your next questions, as right now your demand will not sit well with our developer team. In case you didn't know: they all are volunteers, and working -for free- in their own free time.

ON TOPIC:
If your external hardddisk has no disklabel, it's quite possible that Android constructs its own disk names. If Kodi was using an old diskname, and Oreo now uses a new/different diskname, it is quite possible that Kodi is totallly confused. You will likely have to rescrape your entire media collection in a new Kodi video/music database.