Topic on Project:Support desk

IRC channel provided support as described in detail in prior post.

Recently upgraded a WAMP MediaWiki to 1.27.1. When using Search box, searches for terms that do NOT link to articles, that is, using the "Containing..." option where there is no article in the primary namespace that correspond to the search term entered, I get a PHP fatal error.

Fatal error: OOUI\InputWidget cannot use OOUI\FlaggedElement - it is not a trait in (wikiroot directory)\vendor\oojs\oojs-ui\php\widgets\InputWidget.php on line 11

Saw reference to a similar problem here Topic:Taia3uhd7ay5nxuk, but didn't see a solution or workaround. Any suggestions? Search box autocomplete working fine. Selecting a page from the search results dropdown works fine. Only issue I know of is the "containing..." search.

Software stack:

Windows 10 - Microsoft Windows [Version 10.0.14393]

MediaWiki	1.27.1
PHP	5.6.27 (apache2handler)
MySQL	5.6.30

Troubleshooting log:

1) Restarted Apache web server

2) Checked Apache error.log file, but no errors there.

3) Ran "composer update" on main MediaWiki composer file and restarted Apache again.

Several (10-12) warnings were issued about specific class files, like:

Warning: Ambiguous class resolution, "OOUI\ButtonElement" was found in both "C:\Users\Public\Documents\website\RTWWiki\vendor/oojs/oojs-ui/php/elements\ButtonElement.php" and "C:\Users\Public\Documents\website\RTWWiki\vendor/oojs/oojs-ui/php/mixins\ButtonElement.php", the first will be used.

4) Re-ran maintenance/update script. I had to correct some permission errors on the account the wiki was using to allow it DROP table permissions. Update script could then run these two commands, which it previously erred on:

Dropping table msg_resource_links ...done.

Dropping table msg_resource ...done.

! ) Fatal error: OOUI\InputWidget cannot use OOUI\FlaggedElement - it is not a trait in C:\Users\Public\Documents\website\RTWWiki\vendor\oojs\oojs-ui\php\widgets\InputWidget.php on line 11
Call Stack
#	Time	Memory	Function	Location
1	0.0014	242328	{main}( )	...\index.php:0
2	0.5346	16699416	MediaWiki->run( )	...\index.php:43
3	0.5346	16700616	MediaWiki->main( )	...\MediaWiki.php:519
4	0.5419	17216392	MediaWiki->performRequest( )	...\MediaWiki.php:745
5	0.5442	17582240	SpecialPageFactory::executePath( )	...\MediaWiki.php:282
6	0.5444	17585216	SpecialPage->run( )	...\SpecialPageFactory.php:576
7	0.5444	17585616	SpecialSearch->execute( )	...\SpecialPage.php:479
8	0.7767	23665760	SpecialSearch->showResults( )	...\SpecialSearch.php:140
9	0.8404	24864816	SpecialSearch->shortDialog( )	...\SpecialSearch.php:342
10	0.8404	24865120	spl_autoload_call ( )	...\SpecialSearch.php:1236
11	0.8404	24865344	AutoLoader::autoload( )	...\SpecialSearch.php:1236
12	0.8409	24879168	require( 'C:\Users\Public\Documents\website\RTWWiki\includes\widget\SearchInputWidget.php' )	...\AutoLoader.php:81
13	0.8409	24879496	spl_autoload_call ( )	...\AutoLoader.php:13
14	0.8410	24879728	AutoLoader::autoload( )	...\AutoLoader.php:13
15	0.8414	24897640	require( 'C:\Users\Public\Documents\website\RTWWiki\includes\widget\TitleInputWidget.php' )	...\AutoLoader.php:81
16	0.8414	24897912	spl_autoload_call ( )	...\AutoLoader.php:13
17	0.8415	24898104	Composer\Autoload\ClassLoader->loadClass( )	...\AutoLoader.php:13
18	0.8415	24898104	Composer\Autoload\includeFile( )	...\ClassLoader.php:301
19	0.8424	24951832	include( 'C:\Users\Public\Documents\website\RTWWiki\vendor\oojs\oojs-ui\php\widgets\TextInputWidget.php' )	...\ClassLoader.php:414
20	0.8424	24952120	spl_autoload_call ( )	...\ClassLoader.php:8
21	0.8425	24952312	Composer\Autoload\ClassLoader->loadClass( )	...\ClassLoader.php:8
22	0.8425	24952312	Composer\Autoload\includeFile( )	...\ClassLoader.php:301
23	0.8435	24988232	include( 'C:\Users\Public\Documents\website\RTWWiki\vendor\oojs\oojs-ui\php\widgets\InputWidget.php' )	...\ClassLoader.php:414

Appreciate any help.

Thanks,

IowaJason

bawolff on IRC support channel provided a solution. Basic problem is that my upgrade technique was to overlay new version of MW software over old version directory structure, creating duplicate paths. The suggestions was to install into clean directory on file system.

The shortcut I used accomplished to accomplish this goal was:

1) Stop Apache web server

2) Delete "includes" and "vendor" directories (I hypothesize that only "vendor" directory would have been sufficient.)

3) Recopy those 2 directories from distribution tarball.

4) Run "composer update" although I'm advised that such step is unnecessary.

5) Restart Apache

Thank you to bawolff.

Hi there,

I'm not sure if anyone still needs the solution. But I think this error can occur anytime you upgrade an old wiki via composer.

The ambiguous class declaration comes from the files inside the /vendor/oojs/oojs-ui/php/elements folder. It's outdated and seems to not get deleted by the composer while updating. Just delete this folder and rerun the composer update.

This should do it.

Regards,

aploe