Gamekit loadMatchData failed to work after the new version of Game Center

My turn based app "seekingFriends" failed working since the new version of Game Center.

Here is the scenario:

Player A originate the game and invited player B. Player B gets the invitation and the  func player(_ player: GKPlayer, receivedTurnEventFor match: GKTurnBasedMatch, didBecomeActive: Bool)  was triggered. However, when player B tried to get the match data via function call loadMatchData, it got nothing. No error happened as well.
Gamekit loadMatchData failed to work after the new version of Game Center
 
 
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