unresolved external symbol error in static function

AEAssetGapMetricCalculator.obj : error LNK2019: unresolved external symbol "public: static double __cdecl CombinableSensitivityFormatter::getResultFromState(class CombinableSensitivityFormatterState const &)" (?getResultFromState@CombinableSensitivityFormatter@@SANABVCombinableSensitivityFormatterState@@@Z) referenced in function "protected: virtual void __thiscall AEAssetGapMetricTableFormatter::constructMetricRows(class MetricSession const *,class CombinableSensitivityFormatterState const &,class SparseRiskMapper::RiskIterator &,unsigned int,class SmartPtr const &)" (?constructMetricRows@AEAssetGapMetricTableFormatter@@MAEXPBVMetricSession@@ABVCombinableSensitivityFormatterState@@AAVRiskIterator@SparseRiskMapper@@IABV?$SmartPtr@VAETableRow@@@@@Z)