RoadNewSS

Hi all, I got the idea to pull all the armor from the game mortal shell, actually speaking what I did, I transferred the armor to the blender and divided into parts ( helmet, cuirass, armor, boots). But then came the question of how to export it to Nifskope, I found a plugin that would help, but it requires the armor to use vanilla Skyrim materials. Then I decided to try to save the armor in obj format and import into nifskope, but the same problem, Nifskope writes "Failed to read C:/Games/WorkFiles/Marine Helmet/C€P "RµRj.mtl". Can anyone tell me what to do, how to transfer the armor (with its textures) from blender to Skyrim? Translated with www.DeepL.com