Malformed input on NMDC hubs

WARNING: EXCEPTION, please implement hu.dcwatch.embla.nio.EmblaIoHandler.exceptionCaught() for proper handling:
org.apache.mina.filter.codec.ProtocolDecoderException: java.nio.charset.MalformedInputException: Input length = 1 (Hexdump: 24 51 75 69 74 20 5B 48 55 4E 5D 62 6F 72 73 75 6B 7C 3C 5B 45 4C 49 54 45 5D 4B 69 63 63 3E 20 5B 31 34 3A 32 37 3A 35 31 5D 20 2A 2A 2A 20 50 61 72 74 73 3A 20 5B 4F 50 5D 43 79 42 7C 24 53 65 61 72 63 68 20 38 39 2E 31 33 34 2E 35 32 2E 37 37 3A 31 33 37 32 33 20 46 3F 54 3F 30 3F 39 3F 54 54 48 3A 35 59 55 46 53 4C 37 45 4D 58 34 5A 43 49 4F 49 4D 49 51 32 46 51 48 46 53 4B 4D 5A 4B 35 5A 54 49 51 45 43 35 44 41 7C 24 53 65 61 72 63 68 20 37 37 2E 31 31 31 2E 38 34 2E 32 35 3A 38 34 30 31 20 46 3F 54 3F 30 3F 39 3F 54 54 48 3A C3 81 62 72 61 68 C3 A1 6D 24 31 2E 61 76 69 7C 24 53 65 61 72 63 68 20 31 34 35 2E 32 33 36 2E 32 30 38 2E 34 38 3A 31 34 31 32 20 46 3F 54 3F 30 3F 39 3F 54 54 48 3A 42 49 37 33 58 52 37 44 57 4C 33 44 4D 51 43 56 5A 51 37 59 51 59 37 48 41 57 50 32 54 33 58 4D 56 50 51 50 50 41 51 7C 24 53 65 61 72 63 68 20 38 35 2E 36 37 2E 31 30 31 2E 32 33 35 3A 31 30 35 34 20 46 3F 54 3F 30 3F 39 3F 54 54 48 3A 4A 41 4C 34 47 4B 37 49 50 4C 56 35 32 55 42 48 42 57 59 49 47 34 4D 36 44 59 47 43 4A 4E 49 43 4F 51 59 32 51 34 41 7C 24 53 65 61 72 63 68 20 38 39 2E 31 33 34 2E 31 37 32 2E 37 37 3A 31 39 32 31 38 20 46 3F 54 3F 30 3F 39 3F 54 54 48 3A 4C 44 36 56 42 54 4C 56 49 35 44 51 49 47 43 32 4A 58 49 37 46 45 4C 4C 44 52 32 58 41 46 33 4D 4A 4B 55 57 59 46 49 7C)
        at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:180)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$HeadFilter.messageReceived(DefaultIoFilterChain.java:616)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:408)
        at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:498)
        at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:460)
        at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:452)
        at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:55)
        at org.apache.mina.core.polling.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:775)
        at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.nio.charset.MalformedInputException: Input length = 1
        at java.nio.charset.CoderResult.throwException(CoderResult.java:260)
        at org.apache.mina.core.buffer.AbstractIoBuffer.getString(AbstractIoBuffer.java:1122)
        at org.apache.mina.filter.codec.textline.TextLineDecoder.decodeNormal(TextLineDecoder.java:265)
        at org.apache.mina.filter.codec.textline.TextLineDecoder.decode(TextLineDecoder.java:140)
        at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:170)
        ... 15 more