Photon Unity Networking Free v1.76 Error

Hi, I've just update Photon and the console give me this errors. Why are them? How can I fix them?

1) Assets/Plugins/ChatApi/ChatPeer.cs(52,22): error CS0122: `ExitGames.Client.Photon.PhotonPeer.SocketImplementation' is inaccessible due to its protection level

2) Assets/Plugins/ChatApi/ChatPeer.cs(66,22): error CS0122: `ExitGames.Client.Photon.PhotonPeer.SocketImplementation' is inaccessible due to its protection level