The Prefixes Dont Show Up.

here is the latest log: https://pastebin.com/ddim8T5p

Please help me, this is urgent

There are several issues on your Server (Are you downloading the plugins manually or with a panel?):

1. You have 2 permission-plugins installed on your Server (LuckPerms and PermissionsEx)
   While this is ok, when migrating to LuckPerms, it's not ok to have it after that (also Pex returns an error)
2. You're running the plugin BungeeTools, which - according to the error - is a BungeeCord-plugin. Remove it.
3. LibsDisguise needs ProtocolLib, to work.
4. The plugin LightSource needs LightAPI.
5. You are using two hologram-plugins (Holographic Displays and Holograms). Remove one.
6. Vault is not installed. Vault IS required for LuckPerms, to show prefixes in chat.
7. You should replace Multiverse-Inventory with PerWorldInventory since MVI is outdated.
8. HideMe returns an error on join/leave, because of trying to use a method that doesn't exist (probably outdated)
9. Are you running a command on join/leave? Because it shows [LP] Command not recognized in that time.

The last and probably most important issue (and what solves your issue) is that I couldn't find any enabled Chat-plugin in the provided log.
You need to have Vault and a compatible chatplugin (like EssentialsX with EssentialsXChat) on your server installed, to display prefixes in chat.