Hi I don't know what to do. My console is going crazy because of Luckperms. Trough night log file had 20gb. Please help me to fix it
Log: https://pastebin.com/6wNMT9vE
I reinstalled whole plugin so config is and was default

Help me to fix it because I wanna use this plugin any help would help

This is the part that concerns you and tells you what you can do about it.

The operation to load user data for '5eb36239-c818-3d55-8f80-648ae5312bf8' was cancelled by LuckPerms. This is NOT a bug.
The lookup request was made on the main server thread. It is not safe to execute a request to
load data for offline players from the database in this context.
If you are a plugin author, please consider making your request asynchronously.
Alternatively, server admins can disable this catch by setting 'vault-unsafe-lookups' to true
in the LP config, but should consider the consequences (lag) before doing so.

Other than that you should contact josegamerpt.realscoreboard and send them the log too.

So maybe that warns are made by realscoreboard plugin ?

The warning is made by LuckPerms but it's caused by something realscoreboard does that could lag the server. What I pasted above is very explicit about what you can do but you should contact the author regardless.