Topic on Project:Support desk

Hello, i moved my wiki from Debian to Windows. I use XAMPP (php 7.4) and i had the folder (named wiki) containing the file system of the wiki on xampp/htdocs. I also removed the folder of 2 extension (and their localsetting line) that gived a warning.

When i write localhost/wiki it gives the following error:

MediaWiki internal error.

Original exception: [cedf8c6d6bc85e98eb987394] /wiki/ Wikimedia\Rdbms\DBConnectionError from line 1380 of C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php: Cannot access the database: Unknown error (127.0.0.1) Backtrace:

1. 0 C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(931): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
2. 1 C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(898): Wikimedia\Rdbms\LoadBalancer->getServerConnection(integer, string, integer)
3. 2 C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(1043): Wikimedia\Rdbms\LoadBalancer->getConnection(integer, array, string, integer)
4. 3 C:\xampp1\htdocs\wiki\includes\GlobalFunctions.php(2576): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef(integer, array, string)
5. 4 C:\xampp1\htdocs\wiki\includes\cache\localisation\LCStoreDB.php(56): wfGetDB(integer)
6. 5 C:\xampp1\htdocs\wiki\includes\cache\localisation\LocalisationCache.php(441): LCStoreDB->get(string, string)
7. 6 C:\xampp1\htdocs\wiki\includes\cache\localisation\LocalisationCache.php(487): LocalisationCache->isExpired(string)
8. 7 C:\xampp1\htdocs\wiki\includes\cache\localisation\LocalisationCache.php(363): LocalisationCache->initLanguage(string)
9. 8 C:\xampp1\htdocs\wiki\includes\cache\localisation\LocalisationCache.php(304): LocalisationCache->loadItem(string, string)
10. 9 C:\xampp1\htdocs\wiki\languages\Language.php(4413): LocalisationCache->getItem(string, string)
11. 10 C:\xampp1\htdocs\wiki\languages\Language.php(265): Language::getFallbacksFor(string)
12. 11 C:\xampp1\htdocs\wiki\languages\Language.php(225): Language::newFromCode(string)
13. 12 C:\xampp1\htdocs\wiki\includes\ServiceWiring.php(163): Language::factory(string)
14. 13 C:\xampp1\htdocs\wiki\includes\libs\services\ServiceContainer.php(458): Wikimedia\Services\ServiceContainer->{closure}(MediaWiki\MediaWikiServices)
15. 14 C:\xampp1\htdocs\wiki\includes\libs\services\ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService(string)
16. 15 C:\xampp1\htdocs\wiki\includes\MediaWikiServices.php(540): Wikimedia\Services\ServiceContainer->getService(string)
17. 16 C:\xampp1\htdocs\wiki\includes\Setup.php(801): MediaWiki\MediaWikiServices->getContentLanguage()
18. 17 C:\xampp1\htdocs\wiki\includes\WebStart.php(81): require_once(string)
19. 18 C:\xampp1\htdocs\wiki\index.php(41): require(string)
20. 19 {main}

Exception caught inside exception handler: [cedf8c6d6bc85e98eb987394] /wiki/ Wikimedia\Rdbms\DBConnectionError from line 1380 of C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php: Cannot access the database: Unknown error (127.0.0.1) Backtrace:

1. 0 C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(931): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
2. 1 C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(898): Wikimedia\Rdbms\LoadBalancer->getServerConnection(integer, string, integer)
3. 2 C:\xampp1\htdocs\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(1043): Wikimedia\Rdbms\LoadBalancer->getConnection(integer, array, string, integer)
4. 3 C:\xampp1\htdocs\wiki\includes\GlobalFunctions.php(2576): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef(integer, array, string)
5. 4 C:\xampp1\htdocs\wiki\includes\cache\localisation\LCStoreDB.php(56): wfGetDB(integer)
6. 5 C:\xampp1\htdocs\wiki\includes\cache\localisation\LocalisationCache.php(386): LCStoreDB->get(string, string)
7. 6 C:\xampp1\htdocs\wiki\includes\cache\localisation\LocalisationCache.php(304): LocalisationCache->loadItem(string, string)
8. 7 C:\xampp1\htdocs\wiki\languages\Language.php(4413): LocalisationCache->getItem(string, string)
9. 8 C:\xampp1\htdocs\wiki\languages\Language.php(265): Language::getFallbacksFor(string)
10. 9 C:\xampp1\htdocs\wiki\languages\Language.php(225): Language::newFromCode(string)
11. 10 C:\xampp1\htdocs\wiki\includes\ServiceWiring.php(163): Language::factory(string)
12. 11 C:\xampp1\htdocs\wiki\includes\libs\services\ServiceContainer.php(458): Wikimedia\Services\ServiceContainer->{closure}(MediaWiki\MediaWikiServices)
13. 12 C:\xampp1\htdocs\wiki\includes\libs\services\ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService(string)
14. 13 C:\xampp1\htdocs\wiki\includes\MediaWikiServices.php(540): Wikimedia\Services\ServiceContainer->getService(string)
15. 14 C:\xampp1\htdocs\wiki\includes\ServiceWiring.php(440): MediaWiki\MediaWikiServices->getContentLanguage()
16. 15 C:\xampp1\htdocs\wiki\includes\libs\services\ServiceContainer.php(458): Wikimedia\Services\ServiceContainer->{closure}(MediaWiki\MediaWikiServices)
17. 16 C:\xampp1\htdocs\wiki\includes\libs\services\ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService(string)
18. 17 C:\xampp1\htdocs\wiki\includes\MediaWikiServices.php(738): Wikimedia\Services\ServiceContainer->getService(string)
19. 18 C:\xampp1\htdocs\wiki\includes\cache\MessageCache.php(115): MediaWiki\MediaWikiServices->getMessageCache()
20. 19 C:\xampp1\htdocs\wiki\includes\exception\MWExceptionRenderer.php(310): MessageCache::singleton()
21. 20 C:\xampp1\htdocs\wiki\includes\exception\MWExceptionRenderer.php(51): MWExceptionRenderer::reportOutageHTML(Wikimedia\Rdbms\DBConnectionError)
22. 21 C:\xampp1\htdocs\wiki\includes\exception\MWExceptionHandler.php(121): MWExceptionRenderer::output(Wikimedia\Rdbms\DBConnectionError, integer)
23. 22 C:\xampp1\htdocs\wiki\includes\exception\MWExceptionHandler.php(195): MWExceptionHandler::report(Wikimedia\Rdbms\DBConnectionError)
24. 23 C:\xampp1\htdocs\wiki\includes\exception\MWExceptionHandler.php(167): MWExceptionHandler::handleException(Wikimedia\Rdbms\DBConnectionError)
25. 24 [internal function]: MWExceptionHandler::handleUncaughtException(Wikimedia\Rdbms\DBConnectionError)
26. 25 {main}

This is the error: Cannot access the database: Unknown error (127.0.0.1)

Review the database connection settings, check if they are correct. Try to connect to mysql using the database credentials stored in LocalSettings.php through phpmyadmin or a local mysql client

Yes thank you, it was easier than i expected.

Now the wiki work but this message stay on top of every page:

"Warning: array_key_exists() expects parameter 2 to be array, null given inC:\xampp1\htdocs\wiki\extensions\Iframe\Iframe_body.phpon line136"

And this that stay on top of the homepage:

"Notice: Trying to access array offset on value of type bool inC:\xampp1\htdocs\wiki\extensions\SemanticMediaWiki\includes\dataitems\SMW_DI_Property.phpon line508"

And also when i search a page named "Camponotus vagus" it gives to me this error

"[7cd620d1cfe1c7b70b38f41f] /wiki/index.php/Camponotus_vagus Wikimedia\Rdbms\DBReadOnlyError from line 975 of C:\xampp1\htdocs\wiki\includes\libs\rdbms\database\Database.php: Database is read-only: Dumping Database, Access will be restored shortly"

The DBuser have all privileges on the database

The first warning may be that the Iframe extension is not compatible. However, a warning is not an error, and the extension may work just fine. You probably want to turn off the display of warnings and notices

https://stackoverflow.com/questions/28736293/how-to-disable-warnings-and-notices-by-php-ini

But where i must add that php code?

If you use the function error_reporting(0); put that in LocalSettings.php

You can edit php.ini and set display_errors = Off to turn off any error reporting (it's recommended to set it to log file instead)

Thank you very much for the help!

The "Database is read-only: Dumping Database, Access will be restored shortly" seems pretty self explanatory.

You probably set the database to readonly, or even set the site to readonly in LocalSettings.php

I didn't expect that, i don't remember that line on LocalSetting.php :/