Why not give us a few details?
Which slicer did you use?
Which layer is missing?
Is the missing layer file in the .zip file?
Could you upload the layer jpg that’s missing, and the one before it?
Which setting on which printer?
What have you done to try and diagnose it or work around it?
My crystal ball is off for a deep polish and stand upgrade, so I can’t help you without some details.
And I bet that goes for most other people, too.