Last modified: 2013-11-18 19:24:46 UTC
e.g. https://de.wikipedia.org/w/index.php?title=Wikipedia:WikiProjekt_Bundesverdienstkreuz/Sorgenkinder&diff=prev&oldid=124496998 seen such things on hundreds of pages
Sorry but the bot HAST TO DO THIS! Or how should you be able to find out what the error was?! There is no reliable logging system else. And you should note that the bot cleans this messages by itself automatically after the issue was solved. The origin of this are deleted templates and not bot code issues!!
I disagree. You may use a private log file or loggin page for this messages instead of putting them over and over again. See also https://de.wikipedia.org/w/index.php?title=Wikipedia:WikiProjekt_Bundesverdienstkreuz/Sorgenkinder&diff=prev&oldid=124496998 which cause a bug message and has not to do with deleted templates.
Change 95786 had a related patch set uploaded by Xqt: (Bug 57710) Handle AttributeError exception for BS tags https://gerrit.wikimedia.org/r/95786
Change 95786 abandoned by Xqt: (Bug 57110) Handle AttributeError exception for BS tags https://gerrit.wikimedia.org/r/95786