Are you using Sketchup? Did you convert it using Trasmutr?
I used a plugin called MES to convert the MAX model into SU
https://www.mediafire.com/file/3781mr55tfm9ryk/MESV11.zip/file
This is a Chinese developed plug-in, I do not know if you can use the normal
First you need to install a 3DMAX, VRAY FOR MAX, any version, and then install the plugin into the MAX root directory, and then you launch 3DMAX and then open a MAX model, and then click export in the menu, and you’ll find the SKP format in the export format, and that’s what the plugin does