Vague error message 'Could not resolve reference because of:'

 A recent update seems to have broken Swaggerhub validation.   On a swagger2.0 contract with domain references, the UI is reporting multiple errors with the following message:

'Could not resolve reference because of:'

While I appreciate the error messages are less techy than old, the current error message provides NO guidance as to what Swaggerhub believes is broken.

Note, swaggerhub server code generation creates a valid skeleton with all resource models fully created.

These particular APIs have been in existance for over six months, and I believe a recent swaggerhub update broke validation.

Please advise... I contacted swaggerhub support, added them as a collaborator, and provided the UI reference. But they bailed on me and said I should post my message here...    i'm not feeling the support love or product quality.