Unable to read object larger than read buffer: 1195725856

Hi,
checking my server's logs, I see a lot of exceptions of this type:

com.esotericsoftware.kryonet.KryoNetException: Unable to read object larger than read buffer: 1195725856
at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:118)
at com.esotericsoftware.kryonet.Server.update(Server.java:198)
at com.betalord.sgx.network.ServerProcessor.run(ServerProcessor.java:90)
at java.base/java.lang.Thread.run(Thread.java:834)

Now I use default constructor for server and for client, so the object buffer size is 2048 (default). I don't think I send any big objects over the network, they shouldn't be bigger than 1 KB I believe (but could be wrong). However, 1 GB as in given example is just absurd, so there must be some kind of a bug in kryonet that's causing it. From the logs I see I get different values, for example:

369295616
1195725856
369295616
50331695
1195725856
369295616
1431520594
50331695
50331686
1195725856
50331695
50331695
50331695
1212498244
1195725856
and so on.

Any idea on what is going on?