Failed to call hook 'OnSignUpdated' on plugin 'SignsMonitor v1.0.1' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.SignsMonitor.FormatMessage (System.String key, BasePlayer player, System.String displayName, System.String steamId, BaseEntity entity) [0x0000e] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.SignsMonitor.SendDiscordEmbed (System.Byte[] image, BasePlayer player, System.UInt64 signageOwnerId, BaseEntity entity) [0x0000f] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.SignsMonitor.OnSignUpdated (ISignage signage, BasePlayer player, System.Int32 textureIndex) [0x00031] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.SignsMonitor.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00109] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <206a0f2c6ee141f38e2ad549cde44d70>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <beb2b64691c64e2b95b99491bd85442c>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <beb2b64691c64e2b95b99491bd85442c>:0

Failed to call hook 'OnSignUpdated' on plugin 'SignsMonitor v1.0.1' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.SignsMonitor.FormatMessage (System.String key, BasePlayer player, System.String displayName, System.String steamId, BaseEntity entity) [0x0000e] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.SignsMonitor.SendDiscordEmbed (System.Byte[] image, BasePlayer player, System.UInt64 signageOwnerId, BaseEntity entity) [0x0000f] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.SignsMonitor.OnSignUpdated (ISignage signage, BasePlayer player, System.Int32 textureIndex) [0x00031] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.SignsMonitor.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00109] in <c2479723174e4effac0b061d9c3f8190>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <206a0f2c6ee141f38e2ad549cde44d70>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <beb2b64691c64e2b95b99491bd85442c>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <beb2b64691c64e2b95b99491bd85442c>:0

im getting the same :(