Hi ksavett,
The first thing I recommend in order to narrow down this issue is this:
1. Disable all of your plugins & switch to one of the default themes (eg: Twenty-Fourteen).
2. Verify that the issue goes away.
3. Enable Document Gallery and test to see whether the issue returns. If it does, then Document Gallery is the culprit.
4. If the issue did not reoccur in 3, then one of your other plugins or your theme is to blame. To figure out which one it is, continue re-enabling plugins and theme, each time repeating the test. Whenever the test starts failing, whatever failed last is causing the issue.
Assuming Document Gallery is to blame (see #3 above), then in order to debug this I’d like for you to install another plugin which will let us easily see what specifically is failing. If you go into your WordPress dashboard, under Plugins -> Add New search for “Error Log Monitor”. Go ahead and install that and then check your Dashboard home. You should now have a widget called “PHP Error Log”. Is there anything in there?
Thanks,
Dan
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