Failed to call internal hook 'OnStructureUpgraded' on plugin 'Symmetry v1.0.34' [1926574503] (The given key '<redacted-steamid>' was not present in the dictionary.)

getting this a ton on my server

Failed to call internal hook 'OnStructureUpgraded' on plugin 'Symmetry v1.0.34' [1926574503] (The given key '<redacted-steamid>' was not present in the dictionary.)
   at bool System.Collections.Generic.Dictionary<ulong, bool>.get_Item(ulong key)
   at void Oxide.Plugins.Symmetry.OnStructureUpgraded(BuildingBlock BuildingBlock, BasePlayer player, Enum Enum, ulong UInt64) in /var/www/servers/us-build/carbon/plugins/Symmetry.cs:line 560
   at object Oxide.Plugins.Symmetry.InternalCallHook(uint hook, object[] args) in Symmetry.cs/Internal:line 468

let me know if you need more info