Unable to do commands

Description

Ok, so I installed the essentialsX and moved in the essential folder (Already Configured)
So I noticed that they aren't the same so... I put in the Essentials jar file. So when I did that I was getting the command in game a error occurred unable to do command. I was so stranged out and asked a expert Dev what whas the issue. He said it was the plugin and not me. Here is what consle said when I ran a command: https://pastebin.com/1wNnAnXW
Here is what it says in game when I do a command https://gyazo.com/09ed93e923ac0f5f5019cbbe973dfea9
Please Help and fix this!

Environment

I use Pebble Host to host a server

Status

Assignee

RobertG

Reporter

SkidsRUs - Minecraft

Affects versions

Priority

Blocker
Configure