When I run /lpb group default permission set bungeecord.command.server
all that happens is it says [LP] running luckperms v3.2.37.

Running it in the console, I get this message. It says something about MySQL? And when I joined the server it says Permissions couldnt be loaded. Please try again later.

04.07 19:32:41 [Server] SEVERE java.util.concurrent.CompletionException: java.lang.NullPointerException
04.07 19:32:41 [Server] SEVERE at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
04.07 19:32:41 [Server] SEVERE at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
04.07 19:32:41 [Server] SEVERE at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1592)
04.07 19:32:41 [Server] SEVERE at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:63)
04.07 19:32:41 [Server] SEVERE at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
04.07 19:32:41 [Server] SEVERE at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
04.07 19:32:41 [Server] SEVERE at java.lang.Thread.run(Thread.java:748)
04.07 19:32:41 [Server] SEVERE Caused by: java.lang.NullPointerException
04.07 19:32:41 [Server] SEVERE at me.lucko.luckperms.common.storage.backing.sqlprovider.MySQLProvider.getConnection(MySQLProvider.java:118)
04.07 19:32:41 [Server] SEVERE at me.lucko.luckperms.common.storage.backing.SQLBacking.loadGroup(SQLBacking.java:577)
04.07 19:32:41 [Server] SEVERE at me.lucko.luckperms.common.storage.AbstractStorage.lambda$loadGroup$6(AbstractStorage.java:151)
04.07 19:32:41 [Server] SEVERE at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
04.07 19:32:41 [Server] SEVERE ... 4 more