Timeout::Error occured on fbxparse" and, "sorry unable to map existing skeleton".

i have recently been working in nomad sculpt to create a 3d character of which was origonally created from ready player me models and numerous other sketchfab models, making sure to having used voxel merge so its a complete model, then to paint it in procreate, note i only mention that as it may have effected the outcome, yet when i upload my obj to mixamo it comes up with," Timeout::Error occured on fbxparse" and, "sorry unable to map existing skeleton". i am hoping to next import it into blender, once rigged, though i am currently a beginner in all 3d related fields.  If anyone is able to fix the problem and send the improved model that would ne great, im currently going through the trials and errors of this field and i would definately appreciate some help fromthose of whom are experienced

https://drive.google.com/file/d/1FCxKtRCFArKWvNn23TFgfPQPCjb-odDP/view?usp=share_link