ERROR [DecodingProcessor] Unable to decode raw message RawMessage

Hello,
I have problem with decode messages
need help

2018-03-23T12:55:29.667+02:00 ERROR [DecodingProcessor] Error processing message RawMessage{id=b37eed31-2e88-11e8-985f-00163e81db30, journalOffset=12476929057, codec=gelf, payloadSize=8, timestamp=2018-03-23T10:55:29.667Z, remoteAddress=/10.20.20.97:57038} com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input at [Source: ; line: 1, column: 0] at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:270) ~[graylog.jar:?] at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3854) ~[graylog.jar:?] at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3799) ~[graylog.jar:?] at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:2397) ~[graylog.jar:?] at org.graylog2.inputs.codecs.GelfCodec.decode(GelfCodec.java:127) ~[graylog.jar:?] at org.graylog2.shared.buffers.processors.DecodingProcessor.processMessage(DecodingProcessor.java:146) ~[graylog.jar:?] at org.graylog2.shared.buffers.processors.DecodingProcessor.onEvent(DecodingProcessor.java:87) [graylog.jar:?] at org.graylog2.shared.buffers.processors.ProcessBufferProcessor.onEvent(ProcessBufferProcessor.java:74) [graylog.jar:?] at org.graylog2.shared.buffers.processors.ProcessBufferProcessor.onEvent(ProcessBufferProcessor.java:42) [graylog.jar:?] at com.lmax.disruptor.WorkProcessor.run(WorkProcessor.java:143) [graylog.jar:?] at com.codahale.metrics.InstrumentedThreadFactory$InstrumentedRunnable.run(InstrumentedThreadFactory.java:66) [graylog.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131] 2018-03-23T12:55:29.668+02:00 ERROR [DecodingProcessor] Unable to decode raw message RawMessage{id=b37eed35-2e88-11e8-985f-00163e81db30, journalOffset=12476929060, codec=gelf, payloadSize=8, timestamp=2018-03-23T10:55:29.667Z, remoteAddress=/10.20.20.97:57038} on input <57358639e4b05b0a3e576fcd>.

Graylog Version: 2.3.2
Elasticsearch Version: 5.6.4
MongoDB Version: 3.4.4
Operating System: Ubuntu 16.04.2 LTS amd64
Browser version: Firefox 52 ESR

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