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Backtrace:
#0 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(991): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #1 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(963): Wikimedia\Rdbms\LoadBalancer->getServerConnection() #2 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1096): Wikimedia\Rdbms\LoadBalancer->getConnection() #3 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/RestrictionStore.php(643): Wikimedia\Rdbms\LoadBalancer->getConnectionRef() #4 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/RestrictionStore.php(593): MediaWiki\Permissions\RestrictionStore->getCascadeProtectionSourcesInternal() #5 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Title.php(2606): MediaWiki\Permissions\RestrictionStore->getCascadeProtectionSources() #6 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/PermissionManager.php(1017): Title->getCascadeProtectionSources() #7 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/PermissionManager.php(464): MediaWiki\Permissions\PermissionManager->checkCascadingSourcesRestrictions() #8 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/PermissionManager.php(311): MediaWiki\Permissions\PermissionManager->getPermissionErrorsInternal() #9 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/UserAuthority.php(259): MediaWiki\Permissions\PermissionManager->getPermissionErrors() #10 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/Permissions/UserAuthority.php(231): MediaWiki\Permissions\UserAuthority->internalCan() #11 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/user/User.php(4330): MediaWiki\Permissions\UserAuthority->authorizeWrite() #12 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/auth/AuthManager.php(1090): User->authorizeWrite() #13 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/specials/SpecialCreateAccount.php(61): MediaWiki\Auth\AuthManager->checkAccountCreatePermissions() #14 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/specialpage/LoginSignupSpecialPage.php(238): SpecialCreateAccount->checkPermissions() #15 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/specialpage/SpecialPage.php(647): LoginSignupSpecialPage->execute() #16 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/specialpage/SpecialPageFactory.php(1366): SpecialPage->run() #17 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/MediaWiki.php(314): MediaWiki\SpecialPage\SpecialPageFactory->executePath() #18 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/MediaWiki.php(932): MediaWiki->performRequest() #19 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/includes/MediaWiki.php(563): MediaWiki->main() #20 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/index.php(53): MediaWiki->run() #21 /web1-webroot1/wikiroot/mediawiki-1.37.4/w/index.php(46): wfIndexMain() #22 {main}