I was able to download your Revit file now, the geometry in your file was a little more challenging than the test I did. With that file I get the same error as you.
#Checks:
The polycurves in Dynamo looks fine though:
Looks like they fit inside your host too:
And the number of polycurves matches the amount of normal vectors:
#Error messages:
In console: !! Warning: Rebar Container is placed completely outside of its host.
#Suggestion:
You can try to post and issue here: https://github.com/tt-acm/DynamoForRebar/issues
(attach your files, and warning messages)