vocabDatabaseSchema parameter is not passed to the performanceChecks function and it defaults to cdmDatabaseSchema. That makes performance_benchmark.sql look for concept table in cdm schema instead of vocabulary schema.
Just adding vocabDatabaseSchema = vocabDatabaseSchema should fix it.
https://github.com/EHDEN/CdmInspection/blob/master/R/CdmInspection.R#L182 https://github.com/EHDEN/CdmInspection/blob/master/R/PerformanceChecks.R#L47 https://github.com/EHDEN/CdmInspection/blob/master/inst/sql/sql_server/checks/performance_benchmark.sql#L5
vocabDatabaseSchema parameter is not passed to the performanceChecks function and it defaults to cdmDatabaseSchema. That makes performance_benchmark.sql look for concept table in cdm schema instead of vocabulary schema. Just adding vocabDatabaseSchema = vocabDatabaseSchema should fix it.