Blank page, cannot open composer

Hi, I have install new easyblog, cannot upgrade, so need to uninstall and reinstall, but now, my new problem is, the composer page is blank.

What I can find in my php error Is

[22-Dec-2015 14:40:36 UTC] PHP Warning:  is_file(): open_basedir restriction in effect. File(/home/nginx/domains/joomla.my/publicadministrator/templates/isis/html/com_easyblog/styles/style.css) is not within the allowed path(s): (/home/nginx/domains/joomla.my/public/:/usr/local/lib/php/:/tmp/) in /home/nginx/domains/joomla.my/public/libraries/joomla/filesystem/file.php on line 564