Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is main
Closed, ResolvedPublicPRODUCTION ERROR
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Description

Error

mwversion: 1.41.0-wmf.8
reqId: 692e4c83-8f88-47f3-a37e-ef7a9753ee7c
Find reqId in Logstash

normalized_message

[{reqId}] {exception_url}   Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is main

exception.trace

from /srv/mediawiki/php-1.41.0-wmf.8/vendor/wikimedia/assert/src/Assert.php(72)
#0 /srv/mediawiki/php-1.41.0-wmf.8/includes/title/TitleValue.php(190): Wikimedia\Assert\Assert::parameter(boolean, string, string)
#1 /srv/mediawiki/php-1.41.0-wmf.8/includes/title/TitleValue.php(144): TitleValue::assertValidSpec(integer, string, string, string)
#2 /srv/mediawiki/php-1.41.0-wmf.8/includes/specials/pagers/CategoryPager.php(97): TitleValue->__construct(integer, string)
#3 /srv/mediawiki/php-1.41.0-wmf.8/includes/pager/IndexPager.php(549): CategoryPager->formatRow(stdClass)
#4 /srv/mediawiki/php-1.41.0-wmf.8/includes/pager/IndexPager.php(586): IndexPager->getRow(stdClass)
#5 /srv/mediawiki/php-1.41.0-wmf.8/includes/specials/pagers/CategoryPager.php(93): IndexPager->getBody()
#6 /srv/mediawiki/php-1.41.0-wmf.8/includes/specials/SpecialCategories.php(78): CategoryPager->getBody()
#7 /srv/mediawiki/php-1.41.0-wmf.8/includes/specialpage/SpecialPage.php(701): MediaWiki\Specials\SpecialCategories->execute(NULL)
#8 /srv/mediawiki/php-1.41.0-wmf.8/includes/specialpage/SpecialPageFactory.php(1537): SpecialPage->run(NULL)
#9 /srv/mediawiki/php-1.41.0-wmf.8/includes/MediaWiki.php(328): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, RequestContext)
#10 /srv/mediawiki/php-1.41.0-wmf.8/includes/MediaWiki.php(925): MediaWiki->performRequest()
#11 /srv/mediawiki/php-1.41.0-wmf.8/includes/MediaWiki.php(579): MediaWiki->main()
#12 /srv/mediawiki/php-1.41.0-wmf.8/index.php(50): MediaWiki->run()
#13 /srv/mediawiki/php-1.41.0-wmf.8/index.php(46): wfIndexMain()
#14 /srv/mediawiki/w/index.php(3): require(string)
#15 {main}

Impact

830 hits in the last 2 weeks per logstash.
Looks like only https://id.wikipedia.org/wiki/Istimewa:Daftar_kategori is affected.
Appears to have started 2023-05-06 (oldest entry).

Notes

This is the Special:Categories special page.

Details

Request URL: https://id.wikipedia.org/wiki/Istimewa:Daftar_kategori

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	StoryEditPage: Handle edge cases of `categories` input	mediawiki/extensions/Wikistories	master	+2 -2

Customize query in gerrit

Related Objects

Mentioned In: T340527: Special:Categories page on idwiki broken: "Bad value for parameter $title: should not be empty unless namespace is main"
Mentioned Here: T340527: Special:Categories page on idwiki broken: "Bad value for parameter $title: should not be empty unless namespace is main"
T334829: Error: Call to a member function getComment() on null

Event Timeline

MarcoAurelio created this task.May 16 2023, 3:50 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMay 16 2023, 3:50 PM

The sql behind the special page is

SELECT cat_title,cat_pages FROM category ORDER BY cat_title LIMIT 51

When running it on replica there is a row with cat_title = ''

MariaDB [idwiki_p]> SELECT * FROM `category` WHERE cat_title = '';
+---------+-----------+-----------+-------------+-----------+
| cat_id  | cat_title | cat_pages | cat_subcats | cat_files |
+---------+-----------+-----------+-------------+-----------+
| 9214846 |           |         1 |           0 |         0 |
+---------+-----------+-----------+-------------+-----------+
1 row in set (0.002 sec)

There is also a category entry for it:

MariaDB [idwiki_p]> SELECT * FROM `categorylinks` WHERE cl_to = '';
+---------+-------+-----------------------------+---------------------+-------------------+--------------+---------+
| cl_from | cl_to | cl_sortkey                  | cl_timestamp        | cl_sortkey_prefix | cl_collation | cl_type |
+---------+-------+-----------------------------+---------------------+-------------------+--------------+---------+
| 3919432 |       | DANAU_MORAINE\nDANAU MORAINE | 2023-05-06 15:28:14 | Danau_Moraine     | uppercase    | page    |
+---------+-------+-----------------------------+---------------------+-------------------+--------------+---------+
1 row in set (0.004 sec)

https://id.wikipedia.org/?curid=3919432 is a Story page, is that Wikistories ?

Maybe something like "fromArticle":{"articleTitle":"","originalText":""} results in empty category pages. Some validation is missing in core and/or the extension

@Umherirrender Wikistories is possible given that I filed T334829: Error: Call to a member function getComment() on null some days ago and was about idwiki as well.

Change 921129 had a related patch set uploaded (by Func; author: Func):

[mediawiki/extensions/Wikistories@master] StoryEditPage: Handle edge cases of `categories` input

https://gerrit.wikimedia.org/r/921129

gerritbot added a project: Patch-For-Review.May 19 2023, 9:54 AM

Change 921129 merged by jenkins-bot:

[mediawiki/extensions/Wikistories@master] StoryEditPage: Handle edge cases of `categories` input

https://gerrit.wikimedia.org/r/921129

Maintenance_bot removed a project: Patch-For-Review.May 19 2023, 2:10 PM

ReleaseTaggerBot added a project: MW-1.41-notes (1.41.0-wmf.10; 2023-05-23).May 19 2023, 3:00 PM

brennen removed Release Version.May 21 2023, 5:08 AM

Func closed this task as Resolved.Jun 3 2023, 1:13 PM

Func claimed this task.

Func moved this task from Untriaged to May 2023 on the Wikimedia-production-error board.

Umherirrender mentioned this in T340527: Special:Categories page on idwiki broken: "Bad value for parameter $title: should not be empty unless namespace is main".Jun 27 2023, 5:44 PM

Func merged a task: T340852: Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is main.Jun 30 2023, 3:55 PM

Func added a subscriber: Reedy.

In T340527#8968997, @Umherirrender wrote:

In T336780: Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is main the way to insert bad data is fixed, but it seems the database does not clean up itself. So this could need some maintenance script interaction to fix the issue.

Hum, I tried an empty edit, and it ended up did something, but no lucks.

Func merged a task: T340527: Special:Categories page on idwiki broken: "Bad value for parameter $title: should not be empty unless namespace is main".Jun 30 2023, 4:00 PM

Func added a subscriber: Rachmat04.

Func merged a task: T340852: Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is main.Jun 30 2023, 4:02 PM

Func subscribed.

In T336780#8981425, @Func wrote:

Hum, I tried an empty edit, and it ended up did something, but no lucks.

Actually, it half works, the Quarry query shows the page count dropped to zero but the category entry still exists. A run of cleanupEmptyCategories.php is needed.

Mentioned in SAL (#wikimedia-operations) [2023-07-03T13:21:38Z] <urbanecm> Run wikiadmin2023@10.64.16.184(idwiki)> DELETE FROM category` WHERE cat_title = ''; ` (T336780)

In T336780#8981484, @Func wrote:

In T336780#8981425, @Func wrote:

Hum, I tried an empty edit, and it ended up did something, but no lucks.

Actually, it half works, the Quarry query shows the page count dropped to zero but the category entry still exists. A run of cleanupEmptyCategories.php is needed.

Unfortunately, the script complained about category being invalid (which it is):

[urbanecm@mwmaint1002 ~]$ mwscript cleanupEmptyCategories.php --wiki=idwiki --force
Adding empty categories with description pages...
Removing empty categories without description pages...
The category named  is not valid?!
--mode=remove --begin=Rintisan_bertopik_Kiribati 
Category cleanup complete.
[urbanecm@mwmaint1002 ~]$

I decided to delete the incorrect entry manually. It should no longer be present:

wikiadmin2023@10.64.16.184(idwiki)> SELECT * FROM `category` WHERE cat_title = '';
Empty set (0.000 sec)

wikiadmin2023@10.64.16.184(idwiki)>

Urbanecm removed a project: Wikimedia-maintenance-script-run.Jul 3 2023, 1:28 PM

Func closed this task as Resolved.Jul 3 2023, 1:30 PM

Thank you, @Urbanecm. I can confirm https://id.wikipedia.org/wiki/Istimewa:Daftar_kategori is running well as it should be.

Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is mainClosed, ResolvedPublicPRODUCTION ERRORActions