You didn’t mention the step of initializing Composer dependencies. Did you notice that new requirement in the documentation?
# Open Journal Systems
> Open Journal Systems (OJS) has been developed by the Public Knowledge Project. For general information about OJS and other open research systems, visit the [PKP web site][pkp].
[![Build Status](https://travis-ci.org/pkp/ojs.svg?branch=master)](https://travis-ci.org/pkp/ojs)
## Documentation
You will find detailed guides in [docs](docs) folder.
## Using Git development source
Checkout submodules and copy default configuration :
git submodule update --init --recursive
cp config.TEMPLATE.inc.php config.inc.php
Install or update dependencies via Composer:
cd lib/pkp
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With any blank page, the key will usually be to check the error log for relevant messages. If nothing is immediately apparent, follow the advanced steps from the FAQ:
Check your webserver error log
Usually, this indicates that a PHP error has occurred and the message has been sent to your web server or system log file. Check there – e.g. /var/log/apache/error.log, although the exact location will depend on your server configuration – for further details.
Check your file permissions
If you haven’t installed OJS yet, then the most likely cause is a problem with file permissions in your cache/ or cache/t_compile directories. See docs/README for information on…