java.lang.ClassCastException

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  • java.lang.ClassCastException: graphql.schema.GraphQLTypeReference cannot be cast to graphql.schema.GraphQLUnmodifiedType at graphql.schema.SchemaUtil.getUnmodifiedType(SchemaUtil.java:30) at graphql.schema.SchemaUtil.isLeafType(SchemaUtil.java:12) at graphql.validation.rules.ScalarLeafs.checkField(ScalarLeafs.java:21) at graphql.validation.RulesVisitor.checkField(RulesVisitor.java:92) at graphql.validation.RulesVisitor.enter(RulesVisitor.java:51) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:19) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverseImpl(LanguageTraversal.java:22) at graphql.validation.LanguageTraversal.traverse(LanguageTraversal.java:14) at graphql.validation.Validator.validateDocument(Validator.java:20) at graphql.GraphQL.execute(GraphQL.java:73) at graphql.GraphQL.execute(GraphQL.java:55) at graphql.GraphQL.execute(GraphQL.java:47) at graphql.GraphQL.execute(GraphQL.java:43) at GraphQLTest.main(GraphQLTest.java:63)
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