FormatException at msgSolved

I have this error in my console:
Why?? Help me please

[Dangerous Treasures] -442.34 -1,134.23: LR-300 Assault Rifle (1), M92 Pistol (1), Survey Charge (20), Coffee Can Helmet (1), HV Pistol Ammo (40), High Quality Metal (150)
17:12:01) | Failed to run a 1.00 timer in 'DangerousTreasures v2.1.3' (FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.)
at System.Text.StringBuilder.AppendFormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x000ff] in <437ba245d8404784b9fbab9b439ac908>:0
at System.String.FormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x00023] in <437ba245d8404784b9fbab9b439ac908>:0
at System.String.Format (System.String format, System.Object[] args) [0x00020] in <437ba245d8404784b9fbab9b439ac908>:0
at Oxide.Plugins.DangerousTreasures.msg (System.String key, System.String id, System.Object[] args) [0x00073] in <b06650086d25411f9de7d2a8458e966d>:0
at Oxide.Plugins.DangerousTreasures.TryOpenEvent (BasePlayer player) [0x003ae] in <b06650086d25411f9de7d2a8458e966d>:0
at Oxide.Plugins.DangerousTreasures.CheckSecondsUntilEvent () [0x00131] in <b06650086d25411f9de7d2a8458e966d>:0
at Oxide.Plugins.DangerousTreasures.<CheckSecondsUntilEvent>m__A () [0x00000] in <b06650086d25411f9de7d2a8458e966d>:0
at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <1fe782f4b27a43ae85d29ebb2d56c007>:0
You edited "Next Automated Event" or "Manual Event Failed" ? change it back
I do not understand?? in which file should I change this ???
language file
ok ok
Locked automatically