Question session.lock error

[Erdbeerbaum]

Hi, i set up a minecraft server yesterday (i run CasaOS and in Casa the Crafty "app") now i tried using our old world fiels from the previous server, i got the fiel through SCP with the host provided log-in data. after starting the server i hab a weird Session.lock error. i tried deleting the Session.lock file but it didn't work. anything else i could try?

Log:

[06:12:32] [ServerMain/INFO]: [bootstrap] Running Java 21 (OpenJDK 64-Bit Server VM 21.0.2+13-Ubuntu-122.04.1; Private Build null) on Linux 6.1.0-23-amd64 (amd64)
[06:12:32] [ServerMain/INFO]: [bootstrap] Loading Paper 1.21-109-master@5a5035b (2024-07-23T08:16:30Z) for Minecraft 1.21
[06:12:32] [ServerMain/INFO]: [PluginInitializerManager] Initializing plugins...
[06:12:32] [ServerMain/INFO]: [PluginInitializerManager] Initialized 1 plugin
[06:12:32] [ServerMain/INFO]: [PluginInitializerManager] Bukkit plugins (1):
- playit-gg (0.1.4)
[06:12:36] [ServerMain/INFO]: Environment: Environment[sessionHost=[URL]https://sessionserver.mojang.com[/URL], servicesHost=https://api.minecraftservices.com, name=PROD]
[06:12:36] [ServerMain/ERROR]: Failed to start the minecraft server
java.nio.file.AccessDeniedException: ./world/session.lock
at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:90) ~[?:?]
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106) ~[?:?]
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111) ~[?:?]
at java.base/sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:224) ~[?:?]
at java.base/java.nio.channels.FileChannel.open(FileChannel.java:309) ~[?:?]
at java.base/java.nio.channels.FileChannel.open(FileChannel.java:369) ~[?:?]
at net.minecraft.util.DirectoryLock.create(DirectoryLock.java:23) ~[paper-1.21.jar:1.21-109-5a5035b]
at net.minecraft.world.level.storage.LevelStorageSource$LevelStorageAccess.<init>(LevelStorageSource.java:522) ~[paper-1.21.jar:1.21-109-5a5035b]
at net.minecraft.world.level.storage.LevelStorageSource.validateAndCreateAccess(LevelStorageSource.java:428) ~[paper-1.21.jar:1.21-109-5a5035b]
at net.minecraft.server.Main.main(Main.java:197) ~[paper-1.21.jar:1.21-109-5a5035b]
at io.papermc.paper.PaperBootstrap.boot(PaperBootstrap.java:21) ~[paper-1.21.jar:1.21-109-5a5035b]
at org.bukkit.craftbukkit.Main.main(Main.java:287) ~[paper-1.21.jar:1.21-109-5a5035b]
at io.papermc.paperclip.Paperclip.lambda$main$0(Paperclip.java:42) ~[app:?]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]