OJS 3.0 installaion error HTTP 500

Hi Alec.

I have successfully installed on localhost by increasing the
maximum_execution_time.
Now I want to install the software on web through DreamHost

I have uploaded the ojs version 3.0 on ftp using filezilla.

but I can’t set up the files directory.
the error log says

[Mon Oct 10 04:02:51 2016] [error] [client 125.186.135.237] File does not
exist: /home/jamkim31/jclinresdent.dreamhosters.com/missing.html, referer:
http://www.jclinresdent.dreamhosters.com/ojs/index.php/index/install/install
[Mon Oct 10 04:03:51 2016] [error] [client 125.186.135.237] File does not
exist: /home/jamkim31/jclinresdent.dreamhosters.com/ojs/lib/pkp/
js/controllers/tab/settings/siteAccessOptions/form/
SiteAccessOptionsFormHandler.js, referer: http://www.jclinresdent.
dreamhosters.com/ojs/index.php/index/install/install

and there’s another doubt.
currently I have uploaded the ojs on remote site: /
jclinresdent.dreamhosters.com/ojs.

so if I go on http://jclinresdent.dreamhosters.com/ojs the installation
page shows up. but as I saw when I installed on localhost,

won’t the users have to type http://jclinresdent.dreamhosters.com/ojs to
see the homepage of the journal just like the case that I had to type
“localhost/ojs” to access after installation?

Kind Regards,