Merge pull request #4341 from hyarion/feature-error-handling-get_svg

[0.19] [Draft] Add better error message in get_svg for direction

src/Mod/Draft/draftfunctions/svg.py

@@ -468,6 +468,8 @@ def get_svg(obj,
                 plane.alignToPointAndAxis_SVG(App.Vector(0, 0, 0),
                                               direction.negative().negative(),
                                               0)
+            else:
+                raise ValueError("'direction' cannot be: Vector(0, 0, 0)")
         elif isinstance(direction, WorkingPlane.plane):
             plane = direction