RPC Invocation Timeout Error: com.iohao.game.bolt.broker.core.client.BrokerClientItem - 127.0.0.1:10200

This error message indicates that there was a timeout during an RPC invocation. The timeout occurred while trying to invoke a remote procedure call (RPC) on the address 127.0.0.1:10200. The 'RpcResponseResolver' class tried to resolve the response object, but encountered a timeout exception.

The stack trace shows that the error occurred in the 'BrokerClientItem' class, specifically in the 'invokeSync()' method. This method is responsible for invoking the RPC synchronously. The 'BrokerClientItem' class is used for communication with a broker server.

The error further indicates a 'NullPointerException' in the 'InvokeModuleContext' class. This 'NullPointerException' occurs because the 'responseMessage' object is null, and the 'getData()' method is being invoked on it.

To fix this issue, you need to investigate why the 'responseMessage' object is null. It could be due to a problem with the RPC invocation or a failure in the remote server. Check the logs and code related to the RPC invocation to identify the root cause of the issue.