As reported in Discord, when starting a client the following error occurs:
17:48:33 INFO sc.networking.clients.XStreamClient - Creating TCP Network for localhost:13050
Security framework of XStream not explicitly initialized, using predefined black list on your own risk.
17:48:33 WARN sc.networking.clients.XStreamClient - LobbyClient@68dc098b disconnected (Cause: PROTOCOL_ERROR, Exception: {})
com.thoughtworks.xstream.converters.ConversionException:
---- Debugging information ----
cause-exception : java.lang.NullPointerException
cause-message : Cannot invoke "Object.toString()" because the return value of "java.util.Map$Entry.getValue()" is null
class : sc.plugin2022.GameState
required-type : sc.plugin2022.GameState
converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
line number : 78
class[1] : sc.protocol.room.MementoMessage
required-type[1] : sc.protocol.room.MementoMessage
class[2] : sc.protocol.room.RoomPacket
required-type[2] : sc.protocol.room.RoomPacket
version : 1.4.17
-------------------------------
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:77)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:499)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:425)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:277)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:499)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:425)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:277)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1431)
at com.thoughtworks.xstream.XStream$4.readFromStream(XStream.java:2105)
at com.thoughtworks.xstream.core.util.CustomObjectInputStream.readObjectOverride(CustomObjectInputStream.java:123)
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:505)
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:472)
at sc.networking.clients.XStreamClient.receiveThread(XStreamClient.java:102)
at sc.networking.clients.XStreamClient$1.run(XStreamClient.java:79)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.NullPointerException: Cannot invoke "Object.toString()" because the return value of "java.util.Map$Entry.getValue()" is null
at com.thoughtworks.xstream.core.DefaultConverterLookup.lookupConverterForType(DefaultConverterLookup.java:96)
at com.thoughtworks.xstream.XStream$1.lookupConverterForType(XStream.java:485)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:56)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:499)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:425)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:277)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
... 22 common frames omitted
17:48:33 INFO sc.networking.clients.XStreamClient - Stopping XStream-Receive id:13 of LobbyClient@68dc098b
17:48:33 WARN sc.networking.clients.XStreamClient - ReceiveThread is stopping itself
As reported in Discord, when starting a client the following error occurs:
See also #406 and and https://github.com/x-stream/xstream/issues/262