Error Log: https://pastebin.com/8DPZyfWg

groups.zip

Loads Default, Mod, Admin but not Owner and Vip.

Happend while i ran "listgroups", after i manually deleted TABS from the yaml files

Is that the full error? Seems to be some info missing from the top.

Although yeah, this is just caused by bad formatting in one of your files.

What am i doing wrong? or what is the diffrence between my Mod file and my Owner file?

i also tried to make prefixes, but they don't show (Same Problem?) [i have ChatEx]

2019-01-22-1.log
[BTW Thank you for your fast Answser]

So from what i understand, it came from the "&" in the files

• &8[&4Owner&8]:
  priority: 1

above is wrong
this should be the right way, but prefixes are still not shown.

• $8[$4Owner$8]:
  priority: 1

Does it have any effect if none of my groups have weights?

Did you edit the files manually (Added the stuff manually) or did you made it through commands/the web editor?
Because editing files manually isn't recommended from us, because errors like the one you reporting can (and will) appear.
We really recommend to actually use the commands or the web editor.
And to your issue: Mind sharing the group-files with us? preferably through hastebin or a GitHub-gist.

at First i used the Web-Panel, but i accidentally copied the TAB, so deleted them manually.

I tried replacing ChatEx with EssentialsChat but it didn't change anything, i just don't get why the Prefixes aren't there.

groups.zip
https://github.com/Alexxxiox/LuckyPerms_Groups

[15:40:25] [luckperms-0/WARN]: [LuckPerms] Exception thrown whilst performing i/o: owner

So yeah, your owner.yml file has bad formatting, around this area:

[15:40:25] [luckperms-0/WARN]: java.io.IOException: while scanning an anchor
 in 'reader', line 5, column 3:
    - &8[&4Owner&8]:
      ^
expected alphabetic or numeric character, but found [(91)
 in 'reader', line 5, column 5:
    - &8[&4Owner&8]:
        ^

I suggest deleting that section of the file and re-adding the prefix using the commands - the formatting will definitely be correct that way. :)

I don't get an Error anymore, but Prefixes stilll don't show. I don't Know Why
If i type /lp user info - it shows the Prefix, so is it a Formatting Problem? I have ChatEx installed.

Deinstalled ChatEx, Installed your VaultChatFormatter. Everything works perfect now.

Thank you for your Help