So i use permissionsex a lot, and one day it stopped working i was confused and i tried every thing, other than coming here so can you guys please help me

server log:
https://pastebin.com/Yvuu45PF

plugins:
CreateYourOwnMenus
CreateYourOwnMenus-0.5.9.jar
Essentials
Essentials.txt
EssentialsX-2.0.1.jar
Multiverse-Core
Multiverse-Core-2.5.0.jar
PermissionsEx
PermissionsEx-1.23.4.jar
PluginMetrics
UberEnchant.jar
Updater
bStats

if you need anything else please tell me.