EventDetection.lua:30: Invalid 'itemString' argument type (must be a TSM item string): nil

[alphabitnz]

Getting an LUA error very occasionally the last couple of days

1x ...eTSM_PriceChecker\Modules\EventDetection.lua:30: Invalid 'itemString' argument type (must be a TSM item string): nil
[C]: in function error' TradeSkillMaster\Core\API.lua:297: in function ValidateTSMItemString'
TradeSkillMaster\Core\API.lua:211: in function GetCustomPriceValue' ...eTSM_PriceChecker\Modules\EventDetection.lua:30: in function Process'
TSM_PriceChecker\Modules\Util.lua:46: in function TriggeredEvent' TSM_PriceChecker\TSM_PriceChecker-v1.0.7.lua:86: in function ?'
...ory\Libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:119: in function <...ory\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119>
[C]: ?
...ory\Libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:29: in function <...ory\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25>
...ory\Libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:64: in function `Fire'
...\common\Wildpants\libs\AceEvent-3.0\AceEvent-3.0-4.lua:120: in function <...\common\Wildpants\libs\AceEvent-3.0\AceEvent-3.0.lua:119>