16:00:41.351 [grpc-default-executor-0] WARN  c.g.c.firestore.CustomClassMapper - No setter/field for phones found on class com.example.User
16:00:41.368 [grpc-default-executor-0] ERROR o.s.b.a.w.r.e.AbstractErrorWebExceptionHandler - [f78a1336-2]  500 Server Error for HTTP GET "/users"
java.lang.RuntimeException: 'name' was found from document users/joe, cannot apply @DocumentId on this property for class com.example.User
	at com.google.cloud.firestore.CustomClassMapper$BeanMapper.populateDocumentIdProperties(CustomClassMapper.java:900)
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	*__checkpoint ⇢ Handler com.example.UserController#getAllUsers() [DispatcherHandler]
	*__checkpoint ⇢ HTTP GET "/users" [ExceptionHandlingWebHandler]
Original Stack Trace:
		at com.google.cloud.firestore.CustomClassMapper$BeanMapper.populateDocumentIdProperties(CustomClassMapper.java:900)
		at com.google.cloud.firestore.CustomClassMapper$BeanMapper.deserialize(CustomClassMapper.java:878)
		at com.google.cloud.firestore.CustomClassMapper$BeanMapper.deserialize(CustomClassMapper.java:811)
		at com.google.cloud.firestore.CustomClassMapper.convertBean(CustomClassMapper.java:612)
		at com.google.cloud.firestore.CustomClassMapper.deserializeToClass(CustomClassMapper.java:262)
		at com.google.cloud.firestore.CustomClassMapper.convertToCustomClass(CustomClassMapper.java:101)
		at com.google.cloud.firestore.DocumentSnapshot.toObject(DocumentSnapshot.java:189)
		at com.google.cloud.spring.data.firestore.mapping.FirestoreDefaultClassMapper.documentToEntity(FirestoreDefaultClassMapper.java:67)
		at com.google.cloud.spring.data.firestore.FirestoreTemplate.lambda$findAll$8(FirestoreTemplate.java:227)
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:106)
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122)
		at reactor.core.publisher.FluxFilter$FilterSubscriber.onNext(FluxFilter.java:113)
		at reactor.core.publisher.FluxCreate$BufferAsyncSink.drain(FluxCreate.java:880)
		at reactor.core.publisher.FluxCreate$BufferAsyncSink.next(FluxCreate.java:805)
		at reactor.core.publisher.FluxCreate$SerializedFluxSink.next(FluxCreate.java:163)
		at com.google.cloud.spring.data.firestore.util.ObservableReactiveUtil$StreamingObserver.onNext(ObservableReactiveUtil.java:83)
		at io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onMessage(ClientCalls.java:468)
		at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1MessagesAvailable.runInternal(ClientCallImpl.java:667)
		at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1MessagesAvailable.runInContext(ClientCallImpl.java:654)
		at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
		at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
		at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
		at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
		at java.base/java.lang.Thread.run(Thread.java:840)
Error: 1:451 [ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 4.796 s <<< FAILURE! -- in com.example.FirestoreSampleApplicationIntegrationTests
Error: 1:451 [ERROR] com.example.FirestoreSampleApplicationIntegrationTests.saveUserTest -- Time elapsed: 1.846 s <<< ERROR!
org.springframework.web.client.RestClientException: Error while extracting response for type [class [Lcom.example.User;] and content type [application/json]
	at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:119)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:892)
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:790)
	at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:404)
	at com.example.TestUserClient.listUsers(TestUserClient.java:45)
	at com.example.FirestoreSampleApplicationIntegrationTests.saveUserTest(FirestoreSampleApplicationIntegrationTests.java:69)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
Caused by: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type `[Lcom.example.User;` from Object value (token `JsonToken.START_OBJECT`)
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:406)
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:354)
	at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:104)
	... 8 more
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `[Lcom.example.User;` from Object value (token `JsonToken.START_OBJECT`)
 at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 1]
	at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)
	at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1752)
	at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1526)
	at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1473)
	at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.handleNonArray(ObjectArrayDeserializer.java:345)
	at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:197)
	at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:27)
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323)
	at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:2105)
	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1481)
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:395)
	... 10 more