Re: org.apache.commons.lang.NullArgumentException: schemeName must not be null.
Well, we're not seeing this always, but sometimes. We've made a variant with schemes: [ "http" ], but those also fails now and again. It seems to either work or not, once imported, and we're seeing this in 2.0.0, 2.0.2 and 2.1.0. We have seen different projects based off of the same file in the same ReadyAPI instance fail and not fail. This volatility makes it hard to debug, but we basically do Import Swagger, point to the file, import without errors and create a simple GET request that fails (or not).
And it's always the JSON, itself generated from YAML.