SolidWorks 2018 SP3.0

I am using blocks to create a sketch in a .slddrw that has no dimensions at all. I have an "Invalid Solution Found" error and have no idea what generated it.

Some blocks I exploded to trim overlapping features but do not recreate blocks of them. This drawing is just to give the customer a visual of what they can expect. It is not to scale and not dimensioned and mainly used to communicate placement.

Any ideas of what is causing the error?