API thumbnail missing fields

Hello, i have strange problem when i am getting thumbnail over API (xibo 1.8.7)

So first media inline from the top has thumbnail and others doesn’t have, i have checked via Postman and the problem is the same…

Also there are several fields missing like

[thumbnail] =>
[thumbnailUrl] => /api/library/download/47?preview=1&width=100&height=56&cache=1
[downloadUrl] => /api/library/download/47?preview=1
[fileSizeFormatted] => 185.35 KiB