http://en.wikipedia.beta.wmflabs.org/wiki/Talk:Flow_QA seen for both anon and logged in user:
[42c45aa0] /wiki/Talk:Flow_QA Exception from line 62 of /data/project/apache/common-local/php-master/extensions/Flow/includes/ParsoidUtils.php: Failed contacting parsoid
Backtrace:
#0 /data/project/apache/common-local/php-master/extensions/Flow/includes/ParsoidUtils.php(21): Flow\ParsoidUtils::parsoid(string, string, string)
#1 /data/project/apache/common-local/php-master/extensions/Flow/includes/Model/AbstractRevision.php(315): Flow\ParsoidUtils::convert(string, string, string)
#2 /data/project/apache/common-local/php-master/extensions/Flow/includes/Model/AbstractRevision.php(290): Flow\Model\AbstractRevision->getConvertedContent(string)
#3 /data/project/apache/common-local/php-master/extensions/Flow/templates/header.html.php(19): Flow\Model\AbstractRevision->getContent(User, string)
#4 /data/project/apache/common-local/php-master/extensions/Flow/includes/Templating.php(76): include(string)
#5 /data/project/apache/common-local/php-master/extensions/Flow/includes/Templating.php(50): Flow\Templating->_render(string, array)
#6 /data/project/apache/common-local/php-master/extensions/Flow/includes/Block/Header.php(116): Flow\Templating->render(string, array)
#7 /data/project/apache/common-local/php-master/extensions/Flow/includes/View.php(65): Flow\Block\HeaderBlock->render(Flow\Templating, array)
#8 /data/project/apache/common-local/php-master/extensions/Flow/Hooks.php(155): Flow\View->show(Flow\WorkflowLoader, string)
#9 [internal function]: FlowHooks::onPerformAction(OutputPage, Article, Title, User, WebRequest, MediaWiki)
#10 /data/project/apache/common-local/php-master/includes/Hooks.php(199): call_user_func_array(string, array)
#11 /data/project/apache/common-local/php-master/includes/GlobalFunctions.php(4032): Hooks::run(string, array)
#12 /data/project/apache/common-local/php-master/includes/Wiki.php(423): wfRunHooks(string, array)
#13 /data/project/apache/common-local/php-master/includes/Wiki.php(305): MediaWiki->performAction(Article, Title)
#14 /data/project/apache/common-local/php-master/includes/Wiki.php(596): MediaWiki->performRequest()
#15 /data/project/apache/common-local/php-master/includes/Wiki.php(460): MediaWiki->main()
#16 /data/project/apache/common-local/php-master/index.php(49): MediaWiki->run()
#17 /data/project/apache/common-local/w/index.php(3): require(string)
#18 {main}
Version: unspecified
Severity: blocker