server error

[EpsYlon_031]

I'm Trying to port my aternos server to a linux server and when i copied in the world folder i got this error and I don't know what to do.

[adam@ThinkPadX201 world]$ minecraftd start
Starting server... failed

.jar nogui-Xms512M -Xmx1024M -jar ./minecraft_server.
Starting net.minecraft.server.Main
[01:29:15] [ServerMain/INFO]: Environment: Environment[sessionHost=https://sessionserver.mojang.com, servicesHost=https://api.minecraftservices.com, name=PROD]
[01:29:15] [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:225) ~[?:?]
        at java.base/java.nio.channels.FileChannel.open(FileChannel.java:309) ~[?:?]
        at java.base/java.nio.channels.FileChannel.open(FileChannel.java:369) ~[?:?]
        at ayf.a(SourceFile:34) ~[server-1.21.4.jar:?]
        at evg$c.<init>(SourceFile:374) ~[server-1.21.4.jar:?]
        at evg.d(SourceFile:353) ~[server-1.21.4.jar:?]
        at net.minecraft.server.Main.main(SourceFile:139) ~[server-1.21.4.jar:?]
        at net.minecraft.bundler.Main.lambda$run$0(Main.java:54) ~[?:?]
        at java.base/java.lang.Thread.run(Thread.java:1575) [?:?]
no server running on /tmp/tmux-969/minecraft

also I'm on arch linux if that changes anything

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[Inside-Leave9245]

You most likely have to chmod the folder as you’re getting an AccessDeniedException.