Split from bug 42435.

Invalid message parameter: a:1:{s:3:"raw";N;}, backtrace:
Message.php line 622 calls wfBacktrace()
Message.php line 595 calls Message->extractParam()
Message.php line 470 calls Message->replaceParameters()
Message.php line 534 calls Message->toString()
Linker.php line 1562 calls Message->escaped()

or same with s/470/451/, then

LogFormatter.php line 495 calls Linker::commentBlock()
LogEventsList.php line 325 calls LogFormatter->getComment()
LogPager.php line 315 calls LogEventsList->logLine()
Pager.php line 421 calls LogPager->formatRow()
LogEventsList.php line 508 calls IndexPager->getBody()

and

1a)
EditPage.php line 1891 calls LogEventsList::showLogExtract()
EditPage.php line 387 calls EditPage->showIntro()
EditAction.php line 51 calls EditPage->edit()
Wiki.php line 429 calls EditAction->show()
Wiki.php line 305 calls MediaWiki->performAction()
Wiki.php line 555 calls MediaWiki->performRequest( in
/usr/local/apache/common-local/php-1.21wmf4/includes/Message.php on line 624

1b)
Article.php line 1123 calls LogEventsList::showLogExtract()
Article.php line 623 calls Article->showMissingArticle()
ViewAction.php line 37 calls Article->view()
Wiki.php line 429 calls ViewAction->show()
Wiki.php line 305 calls MediaWiki->performAction()
Wiki.php line 555 calls MediaWiki->performReq in
/usr/local/apache/common-local/php-1.21wmf4/includes/Message.php on line 624

Version: 1.21.x
Severity: normal