ERROR - Error exporting API in Swagger format

[jpswade]

$ sh aws-api-export.sh --api APIName
2017-06-01 09:02:59,056 ERROR - Error exporting API in Swagger format
java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.JavaType.isReferenceType()Z
	at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory.findDefaultDeserializer(BasicDeserializerFactory.java:1529)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.findStdDeserializer(BeanDeserializerFactory.java:167)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:132)
	at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:403)
	at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:352)
	at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
	at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
	at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)
	at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:461)
	at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(ObjectMapper.java:3838)
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3732)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2679)
	at com.amazonaws.internal.config.InternalConfig.loadfrom(InternalConfig.java:236)
	at com.amazonaws.internal.config.InternalConfig.load(InternalConfig.java:249)
	at com.amazonaws.internal.config.InternalConfig$Factory.<clinit>(InternalConfig.java:304)
	at com.amazonaws.util.VersionInfoUtils.userAgent(VersionInfoUtils.java:142)
	at com.amazonaws.util.VersionInfoUtils.initializeUserAgent(VersionInfoUtils.java:137)
	at com.amazonaws.util.VersionInfoUtils.getUserAgent(VersionInfoUtils.java:100)
	at com.amazonaws.ClientConfiguration.<clinit>(ClientConfiguration.java:65)
	at com.bytecodestudio.apigexporter.APIGExporter.export(APIGExporter.java:89)
	at com.bytecodestudio.apigexporter.APIGExporterMain.execute(APIGExporterMain.java:74)
	at com.bytecodestudio.apigexporter.APIGExporterMain.main(APIGExporterMain.java:41)

[philiptolk]

I am also getting this exact same error
line 89 is ClientConfiguration clientConfig = new ClientConfiguration().withUserAgent(USER_AGENT);
where USER_AGENT = "AmazonApiGatewayExporter/1.0";