Right now, there is nothing at Community Portal, and no easily findable info about what a constraint report is, why it's important, what to do about constraint violations, and how they are generated from Property Talk pages.
A basic starter page about this would be valuable. Closest that we have now:
https://www.wikidata.org/wiki/Wikidata:Constraint_violation_report_input
https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations