The problem is a entry in "Links" with the "Target" NULL so "delete from Links where Target is NULL;" helped
----- Ursprüngliche Mail ----- > Von: "Sternberger, Sven" <sven.sternber...@desy.de> > An: "rt-users" <rt-users@lists.bestpractical.com> > Gesendet: Montag, 9. Februar 2015 15:16:46 > Betreff: [rt-users] rt-shredder problems > Hello! > > i have a cron job which purges deleted tickets if they are older than 6 month. > this worked for quite a long time but for a week I get an error message > Tickets will be deleted nevertheless. I also ran rt-validator. > > Message: > Couldn't wipeout object: Can't call method "IsLocal" on an undefined value at > /opt/rt4/sbin/../lib/RT/URI.pm line 262. > > This is my cmd line: > /opt/rt4/sbin/rt-shredder --force --sqldump /tmp/backup.ticket6 --plugin > "Tickets=query,Status ='deleted' AND LastUpdated < '-6 Month';limit,100" > > Any idea what is going wrong > > regards > > Sven Sternberger > System Engineer > Tel.: 040/8998-4397 > DESY IT