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Not sure if you've since updated the linked OSM, but I'm not getting the same warnings/errors. When I run your file with OpenStudioApplication v1.7.1 (SDK v3.7.0), I get a single error (in the non-empty run/eplusout.err file):

** Severe  ** createSpaceSurfaceLists: Space = SPACE 1093 has no surfaces.   
**  Fatal  ** GetSurfaceData: Errors discovered, program terminates.

SPACE 1093 is indeed a loner. Once deleted, simulations run yet with a bunch of warnings (all easily fixable IMO), and 3 similar (severe) errors (for SURFACE 1615, SURFACE 1702 & SURFACE 1447):

DetermineShadowingCombinations: ... is a casting surface and is non-convex.
Shadowing values may be inaccurate. Check .shd report file for more surface shading details

Hope this helps.