Hi all,

Host updated from php 7.0.x(can’t remember exact but I think it was .14 last 
time I checked) to 7.0.15 Jan 19 build. MW 1.23.15 was working fine and really 
fast on php 7 until the update to 7.0.15 overnight. Now I’m seeing this error.
 
[b073b5b0] /wiki/Main_Page Exception from line 1203 of 
/home/account/public_html/w/includes/parser/Preprocessor_DOM.php: 
PPFrame_DOM::expand: Invalid parameter type
 
Backtrace:
#0 /home/account/public_html/w/includes/parser/Parser.php(3165): 
PPFrame_DOM->expand(NULL, integer)
#1 /home/account/public_html/w/includes/parser/Parser.php(621): 
Parser->replaceVariables(string)
#2 /home/account/public_html/w/includes/parser/Parser.php(4864): 
Parser->preprocess(string, Title, ParserOptions)
#3 /home/account/public_html/w/includes/cache/MessageCache.php(1008): 
Parser->transformMsg(string, ParserOptions, Title)
#4 /home/account/public_html/w/includes/Message.php(977): 
MessageCache->transform(string, boolean, Language, Title)
#5 /home/account/public_html/w/includes/Message.php(669): 
Message->transformText(string)
#6 /home/account/public_html/w/includes/Message.php(732): Message->toString()
#7 /home/account/public_html/w/includes/OutputPage.php(857): Message->text()
#8 /home/account/public_html/w/includes/OutputPage.php(902): 
OutputPage->setHTMLTitle(Message)
#9 /home/account/public_html/w/includes/Article.php(556): 
OutputPage->setPageTitle(string)
#10 /home/account/public_html/w/includes/actions/ViewAction.php(44): 
Article->view()
#11 /home/account/public_html/w/includes/Wiki.php(487): ViewAction->show()
#12 /home/account/public_html/w/includes/Wiki.php(285): 
MediaWiki->performAction(Article, Title)
#13 /home/account/public_html/w/includes/Wiki.php(647): 
MediaWiki->performRequest()
#14 /home/account/public_html/w/includes/Wiki.php(506): MediaWiki->main()
#15 /home/account/public_html/w/index.php(46): MediaWiki->run()
#16 {main}
 
Anyone else experiencing this on 7.0.15, should I file a bug report, known 
issue, is there a solution...? I took a quick look but didn't see anything 
noting 7.0.15 on phabricator.  Earlier versions of 7.0.x we're working just 
fine and have been since early December when I upgraded from php 5.6 to 7. 
Right now my only solution is to drop back down to 5.6. 
 
Thanks
Tom

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