Frequent errors in console

Failed to call hook 'OnPlayerDeath' on plugin 'SimpleKillMessages v1.2.5' (NullReferenceException: Object reference not set to an instance of an object) at Oxide.Plugins.SimpleKillMessages.GetEntityAlias (System.String key) [0x00011] in :0 at Oxide.Plugins.SimpleKillMessages.DeathFromExplosion (BasePlayer victim, BasePlayer attacker, HitInfo info) [0x0000c] in :0 at Oxide.Plugins.SimpleKillMessages.OnPlayerDeath (BasePlayer entity, HitInfo info) [0x001a9] in :0 at Oxide.Plugins.SimpleKillMessages.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0018d] in :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

Same here and very often

(17:41:13) | Failed to call hook 'OnPlayerDeath' on plugin 'SimpleKillMessages v1.2.5' (NullReferenceException: Object reference not set to an instance of an object)

at Oxide.Plugins.SimpleKillMessages.DeathFromExplosion (BasePlayer victim, BasePlayer attacker, HitInfo info) [0x00000] in <fb4d4aafb75740f782871f57414ddfda>:0

at Oxide.Plugins.SimpleKillMessages.OnPlayerDeath (BasePlayer entity, HitInfo info) [0x001a9] in <fb4d4aafb75740f782871f57414ddfda>:0

at Oxide.Plugins.SimpleKillMessages.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0018d] in <fb4d4aafb75740f782871f57414ddfda>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <23ba99f131254889867c71f0bd137b1d>:0

at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <157a94ee66ab4a7991faecd1eb84be3b>:0

at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <157a94ee66ab4a7991faecd1eb84be3b>:0