Error interno

[e6d15aee27566ef22dfe28d2] /w/index.php?title=Especial:Permisos_de_usuario_global&mobileaction=toggle_view_mobile UnexpectedValueException from line 146 of /var/www/html/wiki/w/includes/libs/MapCacheLRU.php: MapCacheLRU::has: invalid key; must be string or integer.

Backtrace:

#0 /var/www/html/wiki/w/includes/libs/MapCacheLRU.php(170): MapCacheLRU->has()
#1 /var/www/html/wiki/w/extensions/CentralAuth/includes/CentralAuthUser.php(205): MapCacheLRU->get()
#2 /var/www/html/wiki/w/extensions/CentralAuth/includes/specials/SpecialGlobalGroupMembership.php(117): CentralAuthUser::getMasterInstanceByName()
#3 /var/www/html/wiki/w/includes/specials/SpecialUserrights.php(111): SpecialGlobalGroupMembership->fetchUser()
#4 /var/www/html/wiki/w/includes/specialpage/SpecialPage.php(600): UserrightsPage->execute()
#5 /var/www/html/wiki/w/includes/specialpage/SpecialPageFactory.php(635): SpecialPage->run()
#6 /var/www/html/wiki/w/includes/MediaWiki.php(307): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#7 /var/www/html/wiki/w/includes/MediaWiki.php(940): MediaWiki->performRequest()
#8 /var/www/html/wiki/w/includes/MediaWiki.php(543): MediaWiki->main()
#9 /var/www/html/wiki/w/index.php(53): MediaWiki->run()
#10 /var/www/html/wiki/w/index.php(46): wfIndexMain()
#11 {main}