Getting this error mutiple times on our server:

Failed to call hook 'OnUserNameUpdated' on plugin 'DiscordSync v1.1.0' (NullReferenceException: Object reference not set to an instance of an object) at Oxide.Plugins.DiscordSync.GetGuildMember (System.String discordId) [0x00018] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync.HandleNick (Oxide.Core.Libraries.Covalence.IPlayer player, System.String discordId) [0x0001d] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync.OnUserNameUpdated (System.String id) [0x00014] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0011c] in <193c5c3f2b3b48e48c5dae0572bd6173>: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 :0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0

Failed to call hook 'OnUserConnected' on plugin 'DiscordSync v1.1.0' (NullReferenceException: Object reference not set to an instance of an object) at Oxide.Plugins.DiscordSync.GetGuildMember (System.String discordId) [0x00018] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync.HandleRole (System.String id, System.String roleName, System.String oxideGroup, System.String discordId) [0x0001a] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync+c__AnonStorey2+c__AnonStorey3.<>m__0 (System.String playerGroup) [0x00031] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at System.Collections.Generic.List`1[T].ForEach (System.Action`1[T] action) [0x00024] in :0
at Oxide.Plugins.DiscordSync+c__AnonStorey2.<>m__0 (Oxide.Plugins.DiscordSync+Configuration+RoleInfo roleSetup) [0x0002f] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at System.Collections.Generic.List`1[T].ForEach (System.Action`1[T] action) [0x00024] in :0
at Oxide.Plugins.DiscordSync.HandleRole (Oxide.Core.Libraries.Covalence.IPlayer player, System.String discordId) [0x0001b] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync.OnUserConnected (Oxide.Core.Libraries.Covalence.IPlayer player) [0x00040] in <193c5c3f2b3b48e48c5dae0572bd6173>:0
at Oxide.Plugins.DiscordSync.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x000f1] in <193c5c3f2b3b48e48c5dae0572bd6173>: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 :0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0