You'd need to check your logs for the full error.

0:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 144ms
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 138ms
20:26 [Info] [Better Chat] [Global] [WD40] King of Haarlem: how are you doing?
20:26 [Info] [Advert Messages] [RustyDesigners] You can get special rewards for joining our Discord! Do /Discord - Join our Discord - Then Message the Discord Reward Bot with your in-game given code!
20:26 [Error] Plugin filename ServerStatus (1).cs must match the main class ServerStatus (should be ServerStatus.cs)
20:26 [Info] [Welcomer]  Lugia left the server (Disconnected)
20:26 [Info] [Better Chat] [Team] [ek] kevin: hes dead
20:26 [Warning] Calling hook OnPlayerChat resulted in a conflict between the following plugins: BetterChat - True (Boolean), Clans (False (Boolean))
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 137ms
8:26 PM [Error] Failed to call hook 'Discord_MessageCreate' on plugin 'DiscordStatus v2.0.51' (IndexOutOfRangeException: Index was outside the bounds of the array.)
  at Oxide.Plugins.DiscordStatus.Discord_MessageCreate (Oxide.Ext.Discord.DiscordObjects.Message message) [0x0002c] in <5492d59d74e04cf084bed3633ce86c22>:0

  at Oxide.Plugins.DiscordStatus.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00121] in <5492d59d74e04cf084bed3633ce86c22>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <ec05e0208c9149bba43236ca58fea105>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0

20:26 [Info] [Welcomer]  [urnan] Aids master64 joined the server from United Kingdom
20:26 [Warning] [VPN Block] IPStack response does not include security information
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 136ms
20:26 [Info] [Better Chat] [Team] [ek] bob: LOL
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 138ms
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 138ms
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 137ms
20:26 [Info] [Better Chat] [Global] [WD40] Nobody: building the big bases again?
20:26 [Info] [Welcomer]  Jonty Bloom joined the server from United Kingdom
20:26 [Warning] [VPN Block] IPStack response does not include security information
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 141ms
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 138ms
20:26 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 136ms
20:27 [Warning] Calling 'OnPlayerSleepEnded' on 'EasyVote v2.0.42' took 138ms

Merged post

We seem to be getting alot of warnings in logs

Merged post

[Exception] InvalidCastException: Object must implement IConvertible.
System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) (at <fb001e01371b4adca20013e0ac763896>:0)
System.Convert.ChangeType (System.Object value, System.Type conversionType) (at <fb001e01371b4adca20013e0ac763896>:0)
Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) (at <ec05e0208c9149bba43236ca58fea105>:0)
Oxide.Plugins.SpotSystem.GetFriends (BasePlayer player, System.Collections.Generic.HashSet`1[BasePlayer]& associated, System.Nullable`1[T] targetPos) (at <04c0e550575b4b249ee89ad5e6186e2a>:0)
Oxide.Plugins.SpotSystem.GetAssociated (BasePlayer player, System.Nullable`1[T] targetPos) (at <04c0e550575b4b249ee89ad5e6186e2a>:0)
Oxide.Plugins.SpotSystem+SpotBehavior.Update () (at <04c0e550575b4b249ee89ad5e6186e2a>:0)
[Error] Failed to call hook 'Discord_MessageCreate' on plugin 'DiscordStatus v2.0.51' (IndexOutOfRangeException: Index was outside the bounds of the array.)
  at Oxide.Plugins.DiscordStatus.Discord_MessageCreate (Oxide.Ext.Discord.DiscordObjects.Message message) [0x0002c] in <ef50524f8184466dab4a3a8b55c5c3d5>:0

  at Oxide.Plugins.DiscordStatus.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00121] in <ef50524f8184466dab4a3a8b55c5c3d5>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <ec05e0208c9149bba43236ca58fea105>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0

[Exception] InvalidOperationException: Collection was modified; enumeration operation may not execute.
System.ThrowHelper.ThrowInvalidOperationException (System.ExceptionResource resource) (at <fb001e01371b4adca20013e0ac763896>:0)
System.Collections.Generic.List`1+Enumerator[T].MoveNextRare () (at <fb001e01371b4adca20013e0ac763896>:0)
System.Collections.Generic.List`1+Enumerator[T].MoveNext () (at <fb001e01371b4adca20013e0ac763896>:0)
Oxide.Plugins.BedsCooldowns+<CheckBags>c__Iterator0.MoveNext () (at <04c0e550575b4b249ee89ad5e6186e2a>:0)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <745c4d442eef4e08b35b5975d62d89d1>:0)
[Exception] InvalidCastException: Object must implement IConvertible.
System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) (at <fb001e01371b4adca20013e0ac763896>:0)
System.Convert.ChangeType (System.Object value, System.Type conversionType) (at <fb001e01371b4adca20013e0ac763896>:0)
Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) (at <ec05e0208c9149bba43236ca58fea105>:0)
Oxide.Plugins.SpotSystem.GetFriends (BasePlayer player, System.Collections.Generic.HashSet`1[BasePlayer]& associated, System.Nullable`1[T] targetPos) (at <e27fd036f4fc4175888d93fa2461ceef>:0)
Oxide.Plugins.SpotSystem.GetAssociated (BasePlayer player, System.Nullable`1[T] targetPos) (at <e27fd036f4fc4175888d93fa2461ceef>:0)
Oxide.Plugins.SpotSystem+SpotBehavior.Update () (at <e27fd036f4fc4175888d93fa2461ceef>:0)
[Error] System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host.
  at System.Net.Sockets.Socket.EndReceive (System.IAsyncResult asyncResult) [0x00012] in <14e3453b740b4bd690e8d4e5a013a715>:0

  at System.Net.Sockets.NetworkStream.EndRead (System.IAsyncResult asyncResult) [0x00057] in <14e3453b740b4bd690e8d4e5a013a715>:0

   --- End of inner exception stack trace ---
  at System.Net.Sockets.NetworkStream.EndRead (System.IAsyncResult asyncResult) [0x0009b] in <14e3453b740b4bd690e8d4e5a013a715>:0

  at Fleck.WebSocketConnection+<>c.<Receive>b__62_0 (System.IAsyncResult result) [0x00017] in <f1ab979dad39453bb3ab99ae17860fb2>:0

[Error] Web request produced exception (Url: http://beancan.io/vote/get/KEY/76561############) in 'EasyVote v2.0.42' plugin (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Core.Libraries.WebRequests+WebRequest.<WaitForResponse>b__40_0 (System.IAsyncResult res) [0x00000] in <ec05e0208c9149bba43236ca58fea105>:0

[Error] Web request produced exception (Url: http://beancan.io/vote/get/KEY/76561############) in 'EasyVote v2.0.42' plugin (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Core.Libraries.WebRequests+WebRequest.<WaitForResponse>b__40_0 (System.IAsyncResult res) [0x00000] in <ec05e0208c9149bba43236ca58fea105>:0

[Exception] InvalidCastException: Object must implement IConvertible.
System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) (at <fb001e01371b4adca20013e0ac763896>:0)
System.Convert.ChangeType (System.Object value, System.Type conversionType) (at <fb001e01371b4adca20013e0ac763896>:0)
Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) (at <ec05e0208c9149bba43236ca58fea105>:0)
Oxide.Plugins.SpotSystem.GetFriends (BasePlayer player, System.Collections.Generic.HashSet`1[BasePlayer]& associated, System.Nullable`1[T] targetPos) (at <0f53b58efd8d4c198fa6e03d36814152>:0)
Oxide.Plugins.SpotSystem.GetAssociated (BasePlayer player, System.Nullable`1[T] targetPos) (at <0f53b58efd8d4c198fa6e03d36814152>:0)
Oxide.Plugins.SpotSystem+SpotBehavior.Update () (at <0f53b58efd8d4c198fa6e03d36814152>:0)
[Error] Curl error 7: Failed to connect to localhost port 80: Connection refused
[Error] [Discord Server Stats] {"message": "400: Bad Request", "code": 0}
[Error] Failed to call hook 'Discord_MessageCreate' on plugin 'DiscordStatus v2.0.51' (IndexOutOfRangeException: Index was outside the bounds of the array.)
  at Oxide.Plugins.DiscordStatus.Discord_MessageCreate (Oxide.Ext.Discord.DiscordObjects.Message message) [0x0002c] in <5492d59d74e04cf084bed3633ce86c22>:0

  at Oxide.Plugins.DiscordStatus.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00121] in <5492d59d74e04cf084bed3633ce86c22>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <ec05e0208c9149bba43236ca58fea105>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0

[Error] [EasyVote] [ClaimStatus] Error printed to oxide/logs/EasyVote
[Error] Plugin filename ServerStatus (1).cs must match the main class ServerStatus (should be ServerStatus.cs)

Per the log, this particular issue is from the Slot Sustem plugin you are using.

Okay, can you help us with the EasyVote? there seems to be alot of warnings / errors with it 

There is a thread for that issue already under its support section.