Topic on Talk:MediaWiki 1.27

Hello. I made the update from Mediawiki 1.26 to 1.27 on a shared hosting (PHP 5.6.23), everything went well, but when going on the wiki, I got a new message regarding XCache that I didn't have previously :

"Warning: xcache_get(): XCache var cache was not initialized properly. Check php log for actual reason in [...]/includes/libs/objectcache/XCacheBagOStuff.php on line 32

Warning: xcache_set(): XCache var cache was not initialized properly. Check php log for actual reason in [...]/includes/libs/objectcache/XCacheBagOStuff.php on line 52"

In LocalSettings.php, I have :

$wgMainCacheType    = CACHE_NONE;

Thanks in advance for any answer.

I've put the question on support desk, which is indeed more appropriate, sorry for the message, no problem if it's deleted