i migrated from pex, luckperms was working fine at the time but when i unloaded pex, every group seems to have disappeared saying it cannot be found, this is the same for users, where i type in my own name like /lp user AdvancedGP meta info, it says this user cannot be found. if i try to create a group it says there was an error.

Can you provide a log of your console when it says there was an error.

When i do /lp user AdvancedGP meta:

07.11 12:35:19 [Server] INFO AdvancedGP issued server command: /lp user AdvancedGP meta 07.11 12:35:19 [Server] WARN org.h2.jdbc.JdbcSQLException: Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-196] 07.11 12:35:19 [Server] WARN at org.h2.message.DbException.getJdbcSQLException(DbException.java:345) 07.11 12:35:19 [Server] WARN at org.h2.message.DbException.get(DbException.java:168) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.db.MVTableEngine$Store.convertIllegalStateException(MVTableEngine.java:188) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.db.MVTableEngine$Store.open(MVTableEngine.java:168) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.db.MVTableEngine.init(MVTableEngine.java:100) 07.11 12:35:19 [Server] WARN at org.h2.engine.Database.getPageStore(Database.java:2476) 07.11 12:35:19 [Server] WARN at org.h2.engine.Database.open(Database.java:697) 07.11 12:35:19 [Server] WARN at org.h2.engine.Database.openDatabase(Database.java:276) 07.11 12:35:19 [Server] WARN at org.h2.engine.Database.<init>(Database.java:270) 07.11 12:35:19 [Server] WARN at org.h2.engine.Engine.openSession(Engine.java:64) 07.11 12:35:19 [Server] WARN at org.h2.engine.Engine.openSession(Engine.java:176) 07.11 12:35:19 [Server] WARN at org.h2.engine.Engine.createSessionAndValidate(Engine.java:154) 07.11 12:35:19 [Server] WARN at org.h2.engine.Engine.createSession(Engine.java:137) 07.11 12:35:19 [Server] WARN at org.h2.engine.Engine.createSession(Engine.java:27) 07.11 12:35:19 [Server] WARN at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:354) 07.11 12:35:19 [Server] WARN at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:116) 07.11 12:35:19 [Server] WARN at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:100) 07.11 12:35:19 [Server] WARN at org.h2.Driver.connect(Driver.java:69) 07.11 12:35:19 [Server] WARN at java.sql.DriverManager.getConnection(DriverManager.java:664) 07.11 12:35:19 [Server] WARN at java.sql.DriverManager.getConnection(DriverManager.java:270) 07.11 12:35:19 [Server] WARN at me.lucko.luckperms.common.storage.backing.sql.provider.FlatfileProvider.getConnection(FlatfileProvider.java:73) 07.11 12:35:19 [Server] WARN at me.lucko.luckperms.common.storage.backing.sql.provider.H2Provider.getConnection(H2Provider.java:32) 07.11 12:35:19 [Server] WARN at me.lucko.luckperms.common.storage.backing.sql.SQLBacking.getUUID(SQLBacking.java:1042) 07.11 12:35:19 [Server] WARN at me.lucko.luckperms.common.storage.AbstractStorage.lambda$getUUID$17(AbstractStorage.java:260) 07.11 12:35:19 [Server] WARN at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590) 07.11 12:35:19 [Server] WARN at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:71) 07.11 12:35:19 [Server] WARN at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) 07.11 12:35:19 [Server] WARN at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 07.11 12:35:19 [Server] WARN at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 07.11 12:35:19 [Server] WARN at java.lang.Thread.run(Thread.java:745) 07.11 12:35:19 [Server] WARN Caused by: java.lang.IllegalStateException: The file is locked: nio:/plugins/LuckPerms/luckperms-h2.mv.db [1.4.196/7] 07.11 12:35:19 [Server] WARN at org.h2.mvstore.DataUtils.newIllegalStateException(DataUtils.java:765) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.FileStore.open(FileStore.java:168) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.MVStore.<init>(MVStore.java:347) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.MVStore$Builder.open(MVStore.java:2930) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.db.MVTableEngine$Store.open(MVTableEngine.java:155) 07.11 12:35:19 [Server] WARN ... 26 more 07.11 12:35:19 [Server] WARN Caused by: java.nio.channels.OverlappingFileLockException 07.11 12:35:19 [Server] WARN at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255) 07.11 12:35:19 [Server] WARN at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152) 07.11 12:35:19 [Server] WARN at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1108) 07.11 12:35:19 [Server] WARN at org.h2.store.fs.FileNio.tryLock(FilePathNio.java:121) 07.11 12:35:19 [Server] WARN at java.nio.channels.FileChannel.tryLock(FileChannel.java:1155) 07.11 12:35:19 [Server] WARN at org.h2.mvstore.FileStore.open(FileStore.java:165) 07.11 12:35:19 [Server] WARN ... 29 more

You have more than one server instance running, all reading from the same H2 database file.

You need to kill the extra java processes, then restart your server.

As you're using a bungee setup I would recommend using a traditional sql-server, like mysql (mariadb).

at the moment i haven't yet connected it to bungee-cord, im just checking it out on 1 server. also i dont know how to kill the extra java processes since they dont exist anymore (past server host services expired)