I work with luck perms.
If i set a prefix /lp group owner meta addprefix 100 &4[&c&lOwner&4]
I get this if i chat [Owner] [Owner] BrownciosB
i get 2 prefixes. but i want onliy one time like this [Owner] BrownciosB
How do i fix that pleas help me as soon you guys can !!

LuckPerms will send what can be seen in /lp user <user> info to other plugins, if it shows only one time there it is something with your chat format and so not LP related.

It is like this i dont know how to fix this

It is an issue with whatever chat plugin you use.

I use vault

Vault itself does not format the chat.

And have essentialschat to

Then it has to do with that. Look in your EssentialsX config, in your chat format if you have like {PREFIX} {DISPLAYNAME} remove the {PREFIX} part

Okay thank you

Its work thanks man :) but how do i split the rank from my name

You can either add it in the command (/lp group owner meta setprefix 100 "&4[&c&lOwner&4] "), change your EssentialsX chat format to something like {PREFIX} {USERNAME} {SUFFIX} or do it in the LP config using the end-spacer