Charging Station Divider

The original .stl was showing errors when I tried to print it with Simplify 3d. You can see the errors in the preview image on the original. I ran it through makeprintable.com and I also just fixed the stl myself in Tinkercad. The file "amazon charging divider" is the one from tinkercad that I printed and the "insert.stl" is the original unremixed version after it was run through makeprintable.com