This is the error what i get
https://pastebin.com/LUAekGW6
minecraft 1.11.2

plugins:

• autobroadcast
• broadcast
• buycraft
• cclearchat
• chatcolor+
• coloredtablist
• coupons
• cratesplus
• enjinMinecraftplugin
• epicrename
• essentials
• essentialschat
• factions
• guishop
• lwc
• massivecore
• mcmmo
• nohoppercraft
• obsidian auctions
• openinv
• permissionsex
• playervaults
• playtime
• pvptimer
• quickban
• randomteleport
• sudo
• trading
• trollcommandsplusplus
• vanish
• vault
• worldedit
• worldguard

What version of PEX are you attempting to use?

Are there any other errors in the console when the server starts up?

ok PermissionsEx v1.23.4

Are there any other errors in the console when the server starts up?

i will start the server is will see of there are more errors

https://pastebin.com/fk4qsKay
there are more errors

do you know how i can fix it

Make sure all of your plugins are for Minecraft 1.11.2 because version incompatibility/mismatch is the cause of most of the errors in your console. The Sudo plugin, for example, seems to be for Minecraft 1.10 and can't be expected to work on a 1.11.2 server (without testing) and since it's giving an error, it may not be usable on 1.11.2.

You also have a major error (or more) in your PermissionsEx\permissions.yml file, so I'll need to take a look at that to clear those up. Fixing this may fix the original error you reported, so Sudo may be functional after we fix this.

but if start the server and use the sudo command it works fine
permissionsfile

I can definitely fix the PermissionsEx\permissions.yml file issues. You may have to remove some incompatible plugins from the server until they're updated by their authors.

ok what are the plugins that i must remove

ok i will change it
thank you i will see of it fixed

Wait. There is much more to fix. That previous message shouldn't have been sent, but this website changed dramatically recently.

it fixed

Errors in your permissions file:

♦ line 78 is missing the closing apostrophe for this line:

        prefix: '&5&l[Obsidian] &l

♦ Lines 19, 20, and 21 all need to be deleted. Those are not proper multiworld settings.

    worlds:
      essentials.fly:
        permissions: []

♦ Line 28 needs to be deleted. It's a permission node listing with no permission node in it.

    - 

♦ Line 63: Avoid using special characters in group names because some badly programmed and very popular plugins will not recognize those names as being real group names on the server. Change "Co-Owner" to "CoOwner"; you can still use prefix: '&4&l[Co-Owner] &1&l' for the group.

  Co-Owner:

Also, be sure you are following this example for the layout, indentation, and formatting of your file. Every group on your server version must have an inheritance: section, or PEX will not function correctly.

Plugin Issues:

♦ mcMMO, LWC, PlayTime, and your versions of the "Essentials" plugins are all outdated.

Since you're using Spigot, you should be using EssentialsX, EssentialsXChat, and Vault.

After you get all of those straightened out, reply to this thread if you have any other problems and I'll see if I can get those straightened out too.

Closing the ticket again. You can still post here.