Issue when trying to claim

When people are trying to claim votes this error is spammed in console and they are told "checking votes"

Failed to call hook 'cmdClaim' on plugin 'EasyVote v2.0.43' (FormatException: Input string was not in a correct format.)
  at System.Text.StringBuilder.AppendFormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x000ae] in :0 
  at System.String.FormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x00023] in :0 
  at System.String.Format (System.String format, System.Object arg0, System.Object arg1) [0x00009] in :0 
  at Oxide.Plugins.EasyVote.cmdClaim (BasePlayer player, System.String command, System.String[] args) [0x002bb] in <5cf0ab08d1754513b96691e3216234f5>:0 
  at Oxide.Plugins.EasyVote.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00324] in <5cf0ab08d1754513b96691e3216234f5>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <50629aa0e75d4126b345d8d9d64da28d>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <50629aa0e75d4126b345d8d9d64da28d>:0 

Perhaps the language file is invalid, or the command syntax is wrong

I have reset the plugin back to default and only edited in the voting sites. No errors done by me in the config. This issue only occurs when they are trying to claim rewards from trackyservers tho so maby this site is unsupported?