Error NO_RESULT_CALLBACK_FOUND

[CRy386i]

It prints that but seems to be working.

LSP[java_language_server]: Error NO_RESULT_CALLBACK_FOUND: {
  error = {                                                                                                                                                     
    code = -32603,                                                                                                                                              
    message = 'Cannot invoke "String.hashCode()" because "<local9>" is null'                                                                                    
  },                                                                                                                                                            
  id = 578156309,                                                                                                                                               
  jsonrpc = "2.0"                                                                                                                                               
}