The relevant and significant difference I see in the second of your log files (as you have already stated), are errors thrown out by ffmpeg (invalid sync code, frame header, resulting in a decode frame failure) as it reads the input file file for playback (to convert to PCM) - this happens at the very beginning of the file being played back.
2025-04-17 17:36:01.269 T:3263 error <general>: ffmpeg[0xb0d4c850]: [flac] invalid sync code
2025-04-17 17:36:01.269 T:3263 error <general>: ffmpeg[0xb0d4c850]: [flac] invalid frame header
2025-04-17 17:36:01.269 T:3263 error <general>: ffmpeg[0xb0d4c850]: [flac] decode_frame() failed
Have a look at this post: Freeze when playing large FLAC file, it might be worth installing autofs to improve the reliability of your disk data transfers (Mounting network shares with autofs (alternative to fstab))
What sort of setup do you have for accessing the audio files from disk, is this rate limited in anyway ?
Have you tried copying one of the FLAC files over to Vero-V local storage and playing from there. Do the same playback errors occur ?
Does the same problem occur with gapless playback of multiple FLAC files (in the same folder) ?
I appreciate that this was not a problem with the earlier version of the Vero-V software, however the version of Kodi (the media player) is now different (V21.2) and this may have introduced some regression, which my be potetially be overcome by the suggestions above.