Edit of asset "AlphaOS" Rejected

This asset edit has been rejected. Reason: Invalid preview URLs.

	Old/Current	New/Edit
Title	AlphaOS
Description	A mini "OS" made with Godot Engine 3.1 by uriel Deveaud (CincoViento)
Category	Demos
License	MIT
Repository Provider	GitHub
Repository Url	https://github.com/KoreTeknology/AlphaOS
Issues Url	https://github.com/KoreTeknology/AlphaOS/issues
Godot version	Godot 3.1
Version String	0.1.2
Download Commit	0.1.2
Download Url (Computed)	https://github.com/KoreTeknology/AlphaOS/archive/0.1.2.zip
Icon Url	https://raw.githubusercontent.com/KoreTeknology/AlphaOS/master/Development/icon.png

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	Preview Update
Type	image
Image/Video URL	https://raw.githubusercontent.com/KoreTeknology/AlphaOS/master/Documentation/alphaos.png	https://github.com/KoreTeknology/AlphaOS/blob/master/Documentation/alphaos.png
Thumbnail	Notice: Undefined index: thumbnail in /var/www/asset-library.godotengine.org/public/templates/asset_edit.phtml on line 165	https://github.com/KoreTeknology/AlphaOS/blob/master/Documentation/alphaos.png