cache_dir is not writable

#0 /home/services/httpd/iszkolenia.pl/library/Zend/Cache/Backend/File.php(157): Zend_Cache::throwException('cache_dir is no...')
#1 /home/services/httpd/iszkolenia.pl/library/Zend/Cache/Backend/File.php(121): Zend_Cache_Backend_File->setCacheDir('/home/services/...')
#2 /home/services/httpd/iszkolenia.pl/library/Zend/Cache.php(153): Zend_Cache_Backend_File->__construct(Array)
#3 /home/services/httpd/iszkolenia.pl/library/Zend/Cache.php(94): Zend_Cache::_makeBackend('File', Array, false, false)
#4 /home/services/httpd/iszkolenia.pl/application/Bootstrap.php(48): Zend_Cache::factory('Core', 'File', Array, Array)
#5 /home/services/httpd/iszkolenia.pl/library/Zend/Application/Bootstrap/BootstrapAbstract.php(665): Bootstrap->_initConfig()
#6 /home/services/httpd/iszkolenia.pl/library/Zend/Application/Bootstrap/BootstrapAbstract.php(618): Zend_Application_Bootstrap_BootstrapAbstract->_executeResource('config')
#7 /home/services/httpd/iszkolenia.pl/library/Zend/Application/Bootstrap/BootstrapAbstract.php(582): Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap(NULL)
#8 /home/services/httpd/iszkolenia.pl/library/Zend/Application.php(355): Zend_Application_Bootstrap_BootstrapAbstract->bootstrap(NULL)
#9 /home/services/httpd/iszkolenia.pl/public/index.php(23): Zend_Application->bootstrap()
#10 {main}