Crystal Report via SelectHR

We are running Cystalreports on IIS 6.0 with SQL 2014 over TLS 1.2 and get the following error with reunning a report. The process completes and happens with delivering the report.

ErrorFailed to open the connection. Failed to open the connection. fn2zd13t.zhv 4436_2980_{2D201E19-036D-4D35-96D5-7521B7DC0EDD}.rpt
System.Runtime.InteropServices.COMException (0x80000000): No error. at CrystalDecisions.ReportAppServer.ClientDoc.ReportClientDocumentClass.VerifyDatabase() at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.VerifyDatabase() at CrystalDecisions.CrystalReports.Engine.ReportDocument.VerifyDatabase()