ERROR Web request callback raised on exception

Dont know why i get this error. Anyone know what to do?

09:39 [Error] Web request callback raised an exception (IndexOutOfRangeException: Index was outside the bounds of the array.)
at Oxide.Plugins.EasyVote.GaveRewards (BasePlayer player, System.Collections.Generic.List`1[T] rewardValue) [0x0002a] in <39551b07f92d4c88950a4fe41001e564>:0

at Oxide.Plugins.EasyVote.RewardHandler (BasePlayer player, System.String serverName) [0x00259] in <39551b07f92d4c88950a4fe41001e564>:0

at Oxide.Plugins.EasyVote.ClaimReward (System.Int32 code, System.String response, BasePlayer player, System.String url, System.String serverName) [0x0012e] in <39551b07f92d4c88950a4fe41001e564>:0

at Oxide.Plugins.EasyVote+<cmdClaim>c__AnonStorey3.<>m__0 (System.Int32 code, System.String response) [0x0002e] in <39551b07f92d4c88950a4fe41001e564>:0

at Oxide.Core.Libraries.WebRequests+WebRequest.<OnComplete>b__42_0 () [0x00034] in <50629aa0e75d4126b345d8d9d64da28d>:0

09:55 [Info] [FancyDrop] SupplySignal thrown by '...' at: (-59.8, 7.0, -441.9)
09:56 [Info] [FancyDrop] ... (7656.........) looted the Drop at: (-43, 11, -451) grid area: N17

one of the vote sites is no more... please check your sites and update your config