JsonMappingException

I have an exception when trying to monitor spring boot 1.5.4 app. Admin version is 1.5.2. The client app is “offline”.

May it be a problem with “1” in the JSON below?

/actuator/health:

{
  "status": "UP",
  "diskSpace": {
    "status": "UP",
    "total": 68529299456,
    "free": 12818075648,
    "threshold": 10485760
  },
  "db": {
    "status": "UP",
    "database": "PostgreSQL",
    "hello": 1
  }
}

Client log:

2017-06-30 21:19:57.223  INFO 20378 --- [    updateTask1] d.c.boot.admin.registry.StatusUpdater    : Couldn't retrieve status for Application [id=456c146c, name=spring-boot-application, managementUrl=http://localhost.localdomain:8085/actuator, healthUrl=http://localhost.localdomain:8085/actuator/health, serviceUrl=http://localhost.localdomain:8085]

org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON document: Can not deserialize instance of java.util.LinkedHashMap out of VALUE_NUMBER_INT token
 at [Source: java.io.PushbackInputStream@6864aba8; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.LinkedHashMap out of VALUE_NUMBER_INT token
 at [Source: java.io.PushbackInputStream@6864aba8; line: 1, column: 1]
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:234) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:219) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:95) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:917) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:901) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:655) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:628) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:549) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at de.codecentric.boot.admin.web.client.ApplicationOperations.doGet(ApplicationOperations.java:68) ~[spring-boot-admin-server-1.5.2.jar:1.5.2]
	at de.codecentric.boot.admin.web.client.ApplicationOperations.getHealth(ApplicationOperations.java:58) ~[spring-boot-admin-server-1.5.2.jar:1.5.2]
	at de.codecentric.boot.admin.registry.StatusUpdater.queryStatus(StatusUpdater.java:111) [spring-boot-admin-server-1.5.2.jar:1.5.2]
	at de.codecentric.boot.admin.registry.StatusUpdater.updateStatus(StatusUpdater.java:65) [spring-boot-admin-server-1.5.2.jar:1.5.2]
	at de.codecentric.boot.admin.registry.StatusUpdateApplicationListener$1.run(StatusUpdateApplicationListener.java:47) [spring-boot-admin-server-1.5.2.jar:1.5.2]
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) [spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_112]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_112]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_112]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_112]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_112]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_112]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_112]
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.LinkedHashMap out of VALUE_NUMBER_INT token
 at [Source: java.io.PushbackInputStream@6864aba8; line: 1, column: 1]
	at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:270) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.DeserializationContext.reportMappingException(DeserializationContext.java:1234) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1122) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1075) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.deser.std.StdDeserializer._deserializeFromEmpty(StdDeserializer.java:892) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:358) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:27) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3798) ~[jackson-databind-2.8.8.jar:2.8.8]
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2922) ~[jackson-databind-2.8.8.jar:2.8.8]
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:231) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
	... 20 common frames omitted

[joshiste]

for example by setting: spring.jackson.deserialization.USE_LONG_FOR_INTS=true

[joshiste]

closing due to missing feedback