A suggested addon for Workshop contains Malware#93

The Easy Channel Packing addon for Blender, which is linked in the “Texture Your Character” page on the Workshop Documentation, contains a trojan according to VirusTotal and MetaDefender. Screenshots attached.

(Link to the Workshop Documentation page https://rivals2.com/workshop/knowledge-base/character-creation/texture-your-character/)

I would recommend finding a replacement plugin, or adding documentation on how to format the textures without the addon.