Adding a where filter would limit the existing results. If you aren't getting any, adding a where filter wouldn't help.
No results in the report suggests an issue with the SAS Environment Manager Service Architecture Framework's Log Collection, Log Centralization, or APM ETL processes. You may wish to check those log files for errors:
<SASConfig>/Lev1/Web/SASEnvironmentManager/emi-client/Logs/logCollect*
<SASConfig>/Lev1/Web/SASEnvironmentManager/emi-framework/Logs/logCentralize*
<SASConfig>/Lev1/Web/SASEnvironmentManager/emi-framework/Logs/masterAPMETL*
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