if ( !$success ) {
$where[] = 'loading FAILED - cache is disabled';
$this->mDisable = true;
- $this->cache->set( $code, null );
+ $this->cache->set( $code, [] );
wfDebugLog( 'MessageCacheError', __METHOD__ . ": Failed to load $code\n" );
# This used to throw an exception, but that led to nasty side effects like
# the whole wiki being instantly down if the memcached server died