PUN for WebGL build error : Deserialization failed for internal Operation Response. System.Exception

My project was working fine while on Android platform. I switched to WebGL platform for HTML5. Protocol is set to Web I tried to connect to Photon Network. Can any one suggest how to fix this and make existing
Deserialization failed for internal Operation Response. System.Exception: Deserialize(): 7 pos: 6 bytes: 55. F3-07-01-FF-FF-07-2F-4D-69-73-73-69-6E-67-20-76-61-6C-75-65-20-31-20-28-50-69-6E-67-52-65-71-75-65-73-74-2E-43-6C-69-65-6E-74-54-69-6D-65-53-74-61-6D-70-29-0D-0A-00
  at ExitGames.Client.Photon.Protocol16.Deserialize (ExitGames.Client.Photon.StreamBuffer din, System.Byte type) [0x0021b] in <7c99d57ff1b84df1ab45b8023b1063e2>:0 
  at ExitGames.Client.Photon.Protocol16.DeserializeOperationResponse (ExitGames.Client.Photon.StreamBuffer stream) [0x0002b] in <7c99d57ff1b84df1ab45b8023b1063e2>:0 
  at ExitGames.Client.Photon.PeerBase.DeserializeMessageAndCallback (ExitGames.Client.Photon.StreamBuffer stream) [0x0030d] in <7c99d57ff1b84df1ab45b8023b1063e2>:0 
UnityEngine.Debug:LogError(Object)
NetworkingPeer:DebugReturn(DebugLevel, String) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/NetworkingPeer.cs:1620)
ExitGames.Client.Photon.<>c__DisplayClass104_0:<EnqueueDebugReturn>b__0()
ExitGames.Client.Photon.TPeer:DispatchIncomingCommands()
ExitGames.Client.Photon.PhotonPeer:DispatchIncomingCommands()
PhotonHandler:Update() (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/PhotonHandler.cs:161)

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