received an error when running rspec tests

Failures:

  1) ApiQueue::Controller class methods cache_json should upload data for each endpoint
     Failure/Error: ApiQueue::Controller.cache_json
       <ApiQueue::Source::S3 (class)> received :upload_and_expose with unexpected arguments
         expected: ("api/current_release.json", "{\"release\":\"\"}")
              got: ("api/current_release.json", "{\"release\":null}")
     # ./lib/crunchbase_api/controller.rb:170:in `cache_json'
     # ./spec/lib/crunchbase_api/controller_spec.rb:177:in `block (4 levels) in <top (required)>'

Finished in 10.79 seconds
446 examples, 1 failure