when i exit a practice games i sometimes get this error

(mx.messaging.messages::ErrorMessage)#0
body = (null)
clientId = "F6CE0D9A-9F08-78DB-07B9-3550A2D394C3"
correlationId = "8CCB4F25-5242-58F7-9AA3-07B3AE65EE8C"
destination = "playerStatsService"
extendedData = (null)
faultCode = "Server.Processing"
faultDetail = (null)
faultString = "com.riotgames.platform.messaging.UnexpectedServic eException : null"
headers = (Object)#1
messageId = "F6CE0E96-160A-FE80-4913-78720722BDFB"
rootCause = (com.riotgames.platform.common.exception::Unexpect edServiceException)#2
message = (null)
rootCauseClassname = "com.riotgames.platform.messaging.UnexpectedServic eException"
stackTraceString = (null)
timestamp = 1254259676790
timeToLive = 0


it doesnt crash the game though. i can just close the notice and stay logged in.
hope this is useful. if its nothing, just discard this post.