Problem with export as .stl (ipad)

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1

After update, my model export as .stl file is unreadable.

2

Could it be due to the software you’re using to read it?
Have you tried the file type ‘3MF’? It is richer and generally better.

3

I tried. same problem

4

Unreadable in what app?

5

Simplify,blender doesn’t work…