Hi @nreny77, thanks for posting on the forum and welcome to the SimScale Community 
Unfortunately it’s a bit hard to pinpoint where the problem could potentially be without having a look at your simulation in particular. Could you share a link to it? Here’s a guide that teaches you how:
However, concerning the error you’re getting
Maybe there are still some small faces left. One quick test could be to increase the small feature suppression of the mesh - this would cap the lower value of cells’ edge lenghts.
Cheers
Igor