Checkmk Werk 15006: Fix possible error on view "Crash reports"

ID: 15006 Title: Fix possible error on view "Crash reports" Component: Multisite Level: 1 Class: Bug fix Version: 2.2.0i1 In systems which created a lot of crash reports, an error like "No matching entries found for query: Get crashreports" could be shown if a user tries to open the view "Crash reports".