Hey Zack,
I am really sorry for the delay of this reply as it is a weekend for us here.
I've tried to enabled error_reporting to maximum, so this following error memory limit shown up :
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 22260489 bytes) in xxx\libraries\joomla\cache\storage\file.php on line 140
Then I suspect is it some of the post exhausted a lot of your site memory when load your Easyblog frontpage, so I try to disable your post from backend and see how.
After that I hitting this error when I try to enabled back more than 2 ~ 5 post from backend.
6 Could not resolve host: graph.facebook.com
Then I do some global search why hitting this common error in your site. Then I noticed this :
6 Could not resolve host: graph.facebook.com
You need to contact your hosting provider. This error means something on your server prevents your site from connecting to social network’s API. It could mean that DNS is broken on your server or your server disallows outgoing connections. Either way this is something your hosting provider needs to look at.
** If you are getting Permission denied error, it usually means your hosting provider is blocking access to social network or social network is blocking access from your hosting provider.
*** If you are getting Failed to connect to 2a03:2880:2110:9f01:face:b00c:0:4: Network is unreachable – 2a03:2880:2110:9f01:face:b00c:0:4 is IPV6 address. IPv6 is a new Internet Protocol standard. This error means that IPv6 is activated, but it is not correctly configured on your server. You need to contact your hosting provider about that.
**** Your host is most likely blocking outgoing connections. If you can ssh to the server try pinging graph.facebook.com and see if you can reach that server from your server. If you don't have ssh access to the server you could try using php exec or system to run the ping command.
Perhaps you can consult with your webhosting provider regarding this and see how?
[If you still hitting blank page, try clear your Joomla cache and wait for your webhosting provider response and keep us updated then.]
Reference link :
http://www.nextscripts.com/forums/topic/error-couldnt-resolve-host-graph-facebook-com/
http://stackoverflow.com/questions/9692811/facebook-curlexception-6-couldnt-resolve-host-graph-facebook-com
https://www.sourcecoast.com/forums/jfbconnect/jfbconnect-joomla-25-support/7847-couldn-t-resolve-host-graphfacebookcom