[TYPO3-english] Problem with extension installation

[Siva Prasad]

Hi all,

When  try to install a new extension , I am getting an error like this .

Catchable fatal error: Argument 2 passed to TYPO3\CMS\Core\Cache\Backend\AbstractBackend::__construct() must be of the type array, object given, called in /data/www/typo3_sources/typo3_src-6.2.9/typo3/sysext/core/Classes/Cache/CacheFactory.php on line 93 and defined in /data/www/typo3_sources/typo3_src-6.2.9/typo3/sysext/core/Classes/Cache/Backend/AbstractBackend.php on line 68

Can any one please tell me what exactly is this ?