Error Messages on Simple Files

I’m getting the following error messages on any file, whether new or previously done. These are all simple, basic files with one or a couple of parts drawn. The messages show up when I try to fillet or chamfer a closed spline based shape.

Range of blend on face is too large
Wrong parameters passed to blend algorithm
I’m on an iPad Pro 2 with 512GB and 473GB free storage and only one or two apps open.
I’m not suggesting it’s the same thing but, as an analogy, it reminds me of situations many years ago when computer memory was much more limited where my Adobe Illustrator scratch disk would get filled up and where certain apps were not fully clearing deleted files, both leading to lack of available RAM.