I've been trying to resolve a problem with properties. I've not reinstalled an updated everything I can think of, but the problem remains (I've put my versions below this).
I've looked for these errors and everything I've seen seems to suggest a problem with validator - as you'll have seen, I've downloaded new versions of composer and, thus validator, in case, but it persists.
The error message that I get in the mediawiki debug log is:
" Start request GET /wiki/index.php/Special:SpecialPages HTTP HEADERS: HOST: kchclinics.com USER-AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:31.0) Gecko/20100101 Firefox/31.0 ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 ACCEPT-LANGUAGE: en ACCEPT-ENCODING: gzip, deflate REFERER: http://kchclinics.com/wiki/index.php/KCH_Clinics COOKIE: kchcl200_db_mw_UserName=WikiSysop; kchcl200_db_mw_UserID=1; kchcl200_db_mw_Token=befa8u9vxdaakxqpm7ojupo0c1xhhw5m; clinic_kch_UserID=1; clinic_kch_UserName=WikiSysop; clinic_kch_Token=befa8u9vxdaakxqpm7ojupo0c1xhhw5m; kchcl200_db_mw__session=bh4cr2t9b6knk8k5ekdfd528m7 CONNECTION: keep-alive CACHES: EmptyBagOStuff[main] SqlBagOStuff[message] SqlBagOStuff[parser] [cookie] session_set_cookie_params: "0", "/", "", "", "1" Class LanguageEn_gb not found; skipped loading LocalisationCache: using store LCStore_CDB Class SMWLanguageEn_gb not found; skipped loading Unstubbing $sfgFormPrinter on call of $sfgFormPrinter::registerInputType from efSIISetup Unstubbing $wgParser on call of $wgParser::setHook from ExtDynamicPageList::setupDPL Parser: using preprocessor: Preprocessor_DOM Connected to database 0 at localhost Fully initialised User: cache miss for user 1 User: loading options for user 1 from database. User: logged in from session User: loading options for user 1 from override cache. Connected to database 0 at localhost MessageCache::load: Loading en-gb... got from global cache Class ParserHooks\HookRegistrant not found; skipped loading Class ParserHooks\HookDefinition not found; skipped loading Class ParserHooks\HookHandler not found; skipped loading Class ParserHooks\FunctionRunner not found; skipped loading Class ParserHooks\Internal\Runner not found; skipped loading Class ParserHooks\HookRunner not found; skipped loading " Any suggestions of what I should do to resolve this? My versions are: MediaWiki: 1.22.10 PHP: 5.5.9-1 ubuntu4.3 Installed software Product Version MediaWiki 1.22.10 PHP 5.5.9-1ubuntu4.3 (apache2handler) MySQL 5.5.38-0ubuntu0.14.04.1 Entry point URLs Entry point URL Article path /wiki/index.php/$1 Script path /wiki index.php /wiki/index.php api.php /wiki/api.php load.php /wiki/load.php Installed extensions Semantic extensions Semantic Compound Queries (Version 0.3.4) A parser function that displays multiple semantic queries at the same time Yaron Koren Semantic Drilldown (Version 1.4) A drilldown interface for navigating through semantic data Yaron Koren and others Semantic Extra Special Properties (Version 1.2.1) Adds some extra special properties to all pages Leo Wallentin, James Hong Kong and others Semantic Forms (Version 2.7) Forms for adding and editing semantic data Yaron Koren, Stephan Gambke and others Semantic Forms Inputs (Version 0.7) Additional input types for Semantic Forms Stephan Gambke and others Semantic Image Input (Version 0.3.0 alpha) Adds an image input that pulls images from Wikipedia to Semantic Forms Jeroen De Dauw Semantic Internal Objects (Version 0.7.6) Setting of internal objects in Semantic MediaWiki Yaron Koren Semantic Maps (Version 3.0.4) Provides the ability to view and edit coordinate data stored with the Semantic MediaWiki extension Jeroen De Dauw Semantic MediaWiki (Version 1.9.2) Making your wiki more accessible - for machines and humans (online documentation) Markus Krötzsch, Jeroen De Dauw, James Hong Kong and others Semantic Result Formats (Version 1.9.1) Additional result formats for Semantic MediaWiki queries James Hong Kong, Stephan Gambke, Jeroen De Dauw, Yaron Koren and others Semantic Watchlist (Version 0.2.1) (ba947d8) Lets users be notified of specific changes to Semantic MediaWiki data Jeroen De Dauw for WikiWorks SemanticFormsSelect (Version 1.1) Generate a select field in Semantic Form which values are from query Jasonzhang Special pages Access Log (Version 2.0) Logs user access to MediaWiki Aleksandar Bojinovic, Peter Kin-Fong Fong CheckUser (Version 2.3) (745d266) Grants users with the appropriate permission the ability to check user's IP addresses and other information Tim Starling and Aaron Schulz EmailPage (Version 2.3.0, 2013-11-30) Send rendered HTML page to an e-mail address or list of addresses using phpmailer User:Nad MaintenanceShell (Version 0.4.0) Wiki interface for maintenance scripts Andrew Fitzgerald and Timo Tijhof Parser hooks and http://www.shadowritter.net Chklist (Version 0.1.1) Add checkbox on your wiki page Shadowritter DynamicPageList (Version 2.01) A highly flexible report generator for MediaWikis Gero Scholz GetUserName (Version 1.0) Get current user's name. Ejcaputo Maps (Version 3.0.1) Enables embedding of dynamic maps into wiki pages, geocoding of addresses and other geographical operations. Jeroen De Dauw MsUpload (Version 9.5.1) Enables easy uploads (when available also via drag&drop) for one or multiple files simultaneously info@ratin.de | Ratin ParserFunctions (Version 1.5.1) (497a3bd) Enhance parser with logical functions Tim Starling, Robert Rohde, Ross McClure and Juraj Simlovic Strtotime (Version 1.0) Represents time as a string containing a US English date format Xavier Atero SubPageList (Version 1.1) Allows to list and count subpages Jeroen De Dauw Variables UserInfo (Version 1.0) Displays some info (IP, OS, browser) about the user. Nicolas Labriet Media handlers PagedTiffHandler (65dd904) Handler for viewing TIFF files in image mode HalloWelt! Medienwerkstatt GmbH, Sebastian Ulbricht, Daniel Lynge, Marc Reymann and Markus Glaser for Wikimedia Deutschland PDF Handler (bd89bcc) Handler for viewing PDF files in image mode. Martin Seidel and Mike Połtyn DataValues DataValues (Version 0.1.1) Collection of objects representing various kinds of values Jeroen De Dauw DataValues Geo (Version 0.2) Geographical value objects, parsers and formatters Jeroen De Dauw and The Wikidata team DataValues Time (Version 0.6) Time value objects, parsers and formatters The Wikidata team DataValues Validators (Version 0.1.1) Contains common ValueValidator implementations Jeroen De Dauw and The Wikidata team DataValuesCommon (Version 0.2.2) Contains common implementations of the interfaces defined by DataValuesInterfaces Jeroen De Dauw DataValuesInterfaces (Version 0.1.4) Defines interfaces for ValueParsers, ValueFormatters and ValueValidators Jeroen De Dauw Other EmailAllChanges (Version 1.0.2) Adds a preferences checkbox allowing users to have all changes to pages on the wiki emailed to them Nathan Larson Extension Installer (Version 0.2.2) Allows installing extensions and PHP libraries via Composer Jeroen De Dauw Lockdown (11e4320) Per namespace group permissions Daniel Kinzler and Platonides ParserHooks (Version 1.2.1) OOP interface for creating MediaWiki parser hooks in a declarative fashion Jeroen De Dauw Validator (Version 1.0.0.1) Declarative parameter processing library Jeroen De Dauw WikiCurl (Version 1.0) Universal CURL extension Tomasz Klim and MikoÅ‚aj Musielak Parser extension tags <chklist>, <coordinates>, <describe>, <display_line>, <display_map>, <display_point>, <display_points>, <distance>, <dpl>, <dynamicpagelist>, <finddestination>, <gallery>, <geocode>, <geodistance>, <html>, <info>, <layer>, <listerrors>, <mapsdoc>, <nowiki>, <pre>, <section>, <smwdoc>, <splist>, <subpagecount>, <subpagelist> and <subpages> Parser function hooks USERNAME, anchorencode, arraymap, arraymaptemplate, ask, autoedit, basepagename, basepagenamee, calendarenddate, calendarstartdate, canonicalurl, canonicalurle, compound_query, concept, coordinates, count, declare, defaultsort, describe, display_line, display_map, display_point, display_points, displaytitle, distance, dpl, dplchapter, dplmatrix, dplnum, dplreplace, dplvar, drilldownlink, explode, expr, filepath, finddestination, formatdate, formatnum, forminput, formlink, fullpagename, fullpagenamee, fullurl, fullurle, gender, geocode, geodistance, grammar, if, ifeq, iferror, ifexist, ifexpr, info, int, language, lc, lcfirst, len, listerrors, localurl, localurle, mapsdoc, namespace, namespacee, namespacenumber, ns, nse, numberingroup, numberofactiveusers, numberofadmins, numberofarticles, numberofedits, numberoffiles, numberofpages, numberofusers, numberofviews, padleft, padright, pagename, pagenamee, pagesincategory, pagesize, plural, pos, protectionlevel, queryformlink, rel2abs, replace, rootpagename, rootpagenamee, rpos, set, set_internal, set_internal_recurring_event, set_recurring_event, show, smwdoc, special, speciale, splist, strtotime, sub, subjectpagename, subjectpagenamee, subjectspace, subjectspacee, subobject, subpagecount, subpagelist, subpagename, subpagenamee, subpages, switch, tag, talkpagename, talkpagenamee, talkspace, talkspacee, time, timel, titleparts, uc, ucfirst, urldecode and url encode