Solved Players even OPs cannot pick up items or drop them.

Ok so I bought a 1.7.9 bukkit server on ApexMinecraftHosting. I got the server and everthing was good but no one can pickup items and drop them. Even opped players cannot pickup items or drop them.
Plugins :

Permission Ex Config pastebin:
http://pastebin.com/uEqWHdd0
Essentials Config pastebin:
http://pastebin.com/fHsJqbnU
Server console output:
http://pastebin.com/E7gut9GZ

If I uninstall essentials, everything is good. Plyers can pickup items normally if essentials is uninstalled But essentials is really useful and I want to fix the problem.

If u need anymore files just tell me. Thank you !

 

here is the lastest Log:
http://pastebin.com/FVDmqiph

 

I deleted Essentials anti build and essentials protect but it still didn't work

 

@SeaLegend
Why are you one 1.7.9? That came out over three years ago. Why have you not updated yet?

Try removing all the plugins from the plugin directory. If that fixes your problem, slowly re-add each plugin until you find which one is causing the problem.

 

@Zombie_Striker @timtower

Why I am still on 1.7.9? I don't really know cause I am not the owner. The owner saids only 1.7.9 can have Villager shop plugin working. I know there is some Villager shop plugin on 1.8 but I haven't find it yet. Also, Essentials doesn't work on 1.8. I don't know why. Am I using the wrong essentials plugin? Also, there is a skywars plugin I really want but it's for 1.8 and I can't even pickup stuff. So, questions are:
- Is there any alternative plugin for Essentials and for villager shop for 1.8?
- Essentials made me can't pickup stuff Why?
I might tell the owner to change the server to 1.8 if those are solved. Thanks !

 

Sorry Everyone it is solved now It's just because of the kitpvp plugin Thanks How do I change it to solved?