An AttributeError is raised when `direction=Vector(0,0,0)` and obj is
an Arch::Space on line: bead9bb938/src/Mod/Draft/draftfunctions/svg.py (L799)
This patch checks if early on if the direction vector and raises a
ValueError with a description of what has gone wrong.
A caveat with this solution is that this new behaviour might break old
code which depends on that invalid directions can be used.
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