From goo ...
NoMethodError: undefined method `include?' for nil:NilClass
/Users/manuelso/work/stanford/workspace/sparql_http/lib/sparql_http/resultset/solution.rb:20:in `create_binding_value'
/Users/manuelso/work/stanford/workspace/sparql_http/lib/sparql_http/resultset/solution.rb:50:in `get'
/Users/manuelso/work/stanford/workspace/ontologies_linked_data/lib/ontologies_linked_data/models/class.rb:33:in `block in where'
/Users/manuelso/work/stanford/workspace/sparql_http/lib/sparql_http/resultset/resultset.rb:19:in `each_solution'
/Users/manuelso/work/stanford/workspace/ontologies_linked_data/lib/ontologies_linked_data/models/class.rb:32:in `where'
/Users/manuelso/work/stanford/workspace/ontologies_linked_data/lib/ontologies_linked_data/models/ontology_submission.rb:148:in `classes'
/Users/manuelso/work/stanford/workspace/ontologies_linked_data/test/models/test_class.rb:55:in `test_terms_custom_props'