Paper 1.16.1
Luckperms : 5.1.26
No error via console

After i update my server from 1.15.2 to 1.16.1 all of permissions,group doesn't working. Luckperms just have prefix working ( 1.15.2 working so well )

We need more info than doesn't work. When you run /lp see USER info is the players in the correct group and correct prefix is shown? What type of storage method are you using? And best is to restart and check of startup errors for all plugins including luckperms.

thanks for reply.
my bad. i found that issue.
a plugin scoreboard made that issue.

1. /lp user NAME info . correct ( they the same my old server (1.15.2, working well) )
2. I using YAML to storage data.
3. I tried restart so many times, many ways but won't work. ( nothing errors show up console )

1. Have you directly edited the YAML files before?
2. Can you please explain what isn't working? Given exact commands and permission nodes?
3. To debug permission nodes, run commands lp check USER <node> as well as lp verbose feature
4. Also ensure you are on latest version of lp, I think its 5.1.75 for now

https://luckperms.net/download
https://github.com/lucko/LuckPerms/wiki/Verbose
https://github.com/lucko/LuckPerms/wiki/Command-Usage:-General#lp-check-user-permission