I solved it guys, now say logic, click on one of the parts of something you will add new, whether it's a pet or avatar, click on one of the parts you want to add, and combine it with ctrl+j, then say edit, then say remove the skeleton of the model's group in the game from the vertex group and say assign the skeleton you will add and delete the old object in the game you removed While in edit mode, srobj will export it without any errors. I'm very worried, I was going to be crazy about this job, and finally, add a triangulate plugin to your object so that your object appears in the game without falling apart, so that the characters or items in your game do not look piecemeal, the structures in silkroad are played in the form of triangles, that is, in the form of triangulate.