Uploading problems

I’ve been trying to upload a model to Sketchfab for days. The model is 400MG big, which fits my plan, but it never completes the “Ready to publish” phase. Any idea of what could be happening? I’ve received Error 30 and Error 40 messages.
What’s the solution for that?

It looks like the models failed in processing: https://sketchfab.com/schirato/uploads

It’s 18 million faces, which is pretty big. What software is it exported from? Could you try using another format like OBJ instead of PLY?

I am exporting from Agisoft. What solution do you suggest?

James, I tried .obj but it still did not work. What are other possible solutions?

Thanks, Sergio