It looks like you're new here. If you want to get involved, click one of these buttons!
i have changed chomds to 777 by this line
Step 3. Change the permissions on the cache, conf, css, files, install, lang, and layouts folders and the files in them to be writeable by PHP. First, try setting them to 0755 and see if that works, then try 0775, then finally 0777 (for more info about file permissions, see File permissions). Set the apps folder (this time not recursively) to the same setting as well.
but it create error 500 in install page