Fatal error: Declaration of MediaWiki\Parser\ParserOutput::appendExtensionData(string $key, $value, string $strategy = self::MW_MERGE_STRATEGY_UNION): void must be compatible with Wikimedia\Parsoid\Core\ContentMetadataCollector::appendExtensionData(string $key, string|int $value, Wikimedia\Parsoid\Core\MergeStrategy|string $strategy = Wikimedia\Parsoid\Core\MergeStrategy::UNION): void in H:\root\home\rlyehable-001\www\rlyehable\w2\includes\parser\ParserOutput.php on line 1847