Ok to 1.27 first then..
This is the errors i got: After detection of the old site i clicked upgrade and then it runs for a couple of seconds until it finds it't missig a table or column, i added the missing table or column to the DB (based of the info i found here) then it runs for a couple of second untill another table or column is missing and so on. after all is done, is said the upgrade was successful but when i reload the site i get: "Sorry! This site is experiencing technical difficulties." i added some rows to the localsettings.php to get some more info and that's provided below.
Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::open($save_path, $session_name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\PHPSessionHandler.php on line 181
Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\PHPSessionHandler.php on line 196
Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::read($id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\PHPSessionHandler.php on line 210
Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::write($id, $dataStr) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\PHPSessionHandler.php on line 238
Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::destroy($id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\PHPSessionHandler.php on line 344
Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\PHPSessionHandler.php on line 365
Deprecated: Message implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in D:\inetpub\wwwroot\mediawiki_new\includes\language\Message.php on line 138
Deprecated: MapCacheLRU implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in D:\inetpub\wwwroot\mediawiki_new\includes\libs\MapCacheLRU.php on line 36
Deprecated: strcasecmp(): Passing null to parameter #1 ($string1) of type string is deprecated in D:\inetpub\wwwroot\mediawiki_new\includes\session\CookieSessionProvider.php on line 99
Deprecated: Return type of MediaWiki\Session\Session::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 603
Deprecated: Return type of MediaWiki\Session\Session::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 609
Deprecated: Return type of MediaWiki\Session\Session::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 621
Deprecated: Return type of MediaWiki\Session\Session::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 615
Deprecated: Return type of MediaWiki\Session\Session::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 633
Deprecated: Return type of MediaWiki\Session\Session::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 627
Deprecated: Return type of MediaWiki\Session\Session::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 643
Deprecated: Return type of & MediaWiki\Session\Session::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 656
Deprecated: Return type of MediaWiki\Session\Session::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 666
Deprecated: Return type of MediaWiki\Session\Session::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in D:\inetpub\wwwroot\mediawiki_new\includes\session\Session.php on line 671
Sorry! This site is experiencing technical difficulties.
Try waiting a few minutes and reloading.
(Cannot access the database)
Backtrace:
#0 D:\inetpub\wwwroot\mediawiki_new\includes\libs\rdbms\loadbalancer\LoadBalancer.php(991): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 D:\inetpub\wwwroot\mediawiki_new\includes\libs\rdbms\loadbalancer\LoadBalancer.php(963): Wikimedia\Rdbms\LoadBalancer->getServerConnection()
#2 D:\inetpub\wwwroot\mediawiki_new\includes\libs\rdbms\loadbalancer\LoadBalancer.php(1128): Wikimedia\Rdbms\LoadBalancer->getConnection()
#3 D:\inetpub\wwwroot\mediawiki_new\includes\GlobalFunctions.php(2229): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef()
#4 D:\inetpub\wwwroot\mediawiki_new\includes\cache\localisation\LCStoreDB.php(57): wfGetDB()
#5 D:\inetpub\wwwroot\mediawiki_new\includes\cache\localisation\LocalisationCache.php(448): LCStoreDB->get()
#6 D:\inetpub\wwwroot\mediawiki_new\includes\cache\localisation\LocalisationCache.php(494): LocalisationCache->isExpired()
#7 D:\inetpub\wwwroot\mediawiki_new\includes\cache\localisation\LocalisationCache.php(413): LocalisationCache->initLanguage()
#8 D:\inetpub\wwwroot\mediawiki_new\includes\cache\localisation\LocalisationCache.php(332): LocalisationCache->loadSubitem()
#9 D:\inetpub\wwwroot\mediawiki_new\includes\language\Language.php(2611): LocalisationCache->getSubitem()
#10 D:\inetpub\wwwroot\mediawiki_new\includes\cache\MessageCache.php(1056): Language->getMessage()
#11 D:\inetpub\wwwroot\mediawiki_new\includes\cache\MessageCache.php(1014): MessageCache->getMessageForLang()
#12 D:\inetpub\wwwroot\mediawiki_new\includes\cache\MessageCache.php(956): MessageCache->getMessageFromFallbackChain()
#13 D:\inetpub\wwwroot\mediawiki_new\includes\language\Message.php(1379): MessageCache->get()
#14 D:\inetpub\wwwroot\mediawiki_new\includes\language\Message.php(903): Message->fetchMessage()
#15 D:\inetpub\wwwroot\mediawiki_new\includes\language\Message.php(993): Message->format()
#16 D:\inetpub\wwwroot\mediawiki_new\includes\title\MalformedTitleException.php(55): Message->text()
#17 D:\inetpub\wwwroot\mediawiki_new\includes\title\MediaWikiTitleCodec.php(92): MalformedTitleException->__construct()
#18 D:\inetpub\wwwroot\mediawiki_new\includes\title\MediaWikiTitleCodec.php(399): MediaWikiTitleCodec::{closure}()
#19 D:\inetpub\wwwroot\mediawiki_new\includes\Title.php(3093): MediaWikiTitleCodec->splitTitleString()
#20 D:\inetpub\wwwroot\mediawiki_new\includes\Title.php(493): Title->secureAndSplit()
#21 D:\inetpub\wwwroot\mediawiki_new\includes\MediaWiki.php(88): Title::newFromURL()
#22 D:\inetpub\wwwroot\mediawiki_new\includes\MediaWiki.php(161): MediaWiki->parseTitle()
#23 D:\inetpub\wwwroot\mediawiki_new\includes\MediaWiki.php(891): MediaWiki->getTitle()
#24 D:\inetpub\wwwroot\mediawiki_new\includes\MediaWiki.php(564): MediaWiki->main()
#25 D:\inetpub\wwwroot\mediawiki_new\index.php(53): MediaWiki->run()
#26 D:\inetpub\wwwroot\mediawiki_new\index.php(46): wfIndexMain()
#27 {main}