我是 cron 新手，我需要您的所有帮助，当我使用 cron 作业创建文件夹并在该文件夹 cron 页面中下载图像时，出现以下错误：
PHP Warning: imagejpeg(): Unable to open '././../uploads/lmf-classifieds-pk/folder2/2013-04-05/36258/1365138829_498747097_3-Khyber-1990-Urgent-sale-Islamabad.jpg' for writing: No such file or directory in /var/www/vhosts/ip-50-62-136-81.ip.secureserver.net/lmf_this/cron_lmf/function.php on line 143
PHP Notice: Undefined offset: 1 in /var/www/vhosts/ip-50-62-136-81.ip.secureserver.net/lmf_this/cron_lmf/olx_extract.php on line 562
PHP Warning: mkdir(): Permission denied in /var/www/vhosts/ip-50-62-136-81.ip.secureserver.net/lmf_this/cron_lmf/function.php on line 61
PHP Warning: mkdir(): Permission denied in /var/www/vhosts/ip-50-62-136-81.ip.secureserver.net/lmf_this/cron_lmf/function.php on line 65
PHP Warning: mkdir(): Permission denied in /var/www/vhosts/ip-50-62-136-81.ip.secureserver.net/lmf_this/cron_lmf/function.php on line 69
PHP Warning: mkdir(): No such file or directory in /var/www/vhosts/ip-50-62-136-81.ip.secureserver.net/lmf_this/cron_lmf/function.php on line 90
从这些错误..我可以理解cron作业（页面）无法创建文件夹以及下载图像..由于许可......
我应该在这个罐子里做什么？
请帮我。