Unable to find writable var_dir

#0 D:\Plesk\VHOSTS\kolprojects.com\demo.kolprojects.com\onedirection\app\code\core\Mage\Core\Model\Config\Options.php(66): Mage_Core_Model_Config_Options->getVarDir()
#1 D:\Plesk\VHOSTS\kolprojects.com\demo.kolprojects.com\onedirection\lib\Varien\Object.php(112): Mage_Core_Model_Config_Options->_construct()
#2 D:\Plesk\VHOSTS\kolprojects.com\demo.kolprojects.com\onedirection\app\code\local\Mage\Core\Model\Config.php(200): Varien_Object->__construct(Array)
#3 D:\Plesk\VHOSTS\kolprojects.com\demo.kolprojects.com\onedirection\app\Mage.php(740): Mage_Core_Model_Config->__construct(Array)
#4 D:\Plesk\VHOSTS\kolprojects.com\demo.kolprojects.com\onedirection\app\Mage.php(679): Mage::_setConfigModel(Array)
#5 D:\Plesk\VHOSTS\kolprojects.com\voodoo.kolprojects.com\index.php(110): Mage::run('voodoovixenview', 'store')
#6 {main}