Ok, that‘s not nice. But it is not a problem from the file, the print itself is the problem.
The filament-lines are not tight enough connected. Try to reduce resolution to 0,15mm (but for me on Flashforge 0,2mm is just fine) or use another filament.
Sorry, I hope you‘ll get it to work.
Did you see the *.skp-files? It is a lot easier to manage them on Sketchup than transform and edit stl-files.