[14:19:00] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[14:19:00] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[14:19:00] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[14:19:00] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[14:19:00] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[14:19:00] [Server thread/INFO]: Starting minecraft server version 1.15.2
[14:19:00] [Server thread/INFO]: Loading properties
[14:19:00] [Server thread/INFO]: Default game type: SURVIVAL
[14:19:00] [Server thread/INFO]: Generating keypair
[14:19:00] [Server thread/INFO]: Starting Minecraft server on 0.0.0.0:25565
[14:19:00] [Server thread/INFO]: Using default channel type
[14:19:01] [Server thread/INFO]: Preparing level "world"
[14:19:01] [Server thread/INFO]: [STDERR]: java.io.FileNotFoundException: ./world/session.lock (Permission denied)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at java.io.FileOutputStream.open0(Native Method)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at java.io.FileOutputStream.open(FileOutputStream.java:270)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at java.io.FileOutputStream.<init>(FileOutputStream.java:162)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at crn.h(SourceFile:87)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at crn.<init>(SourceFile:51)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at crp.a(SourceFile:113)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at crp.a(SourceFile:109)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at net.minecraft.server.MinecraftServer.a(SourceFile:360)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at wd.d(SourceFile:219)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at net.minecraft.server.MinecraftServer.run(SourceFile:628)
[14:19:01] [Server thread/INFO]: [STDERR]: 	at java.lang.Thread.run(Thread.java:748)
[14:19:01] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.RuntimeException: Failed to check session lock, aborting
	at crn.h(SourceFile:95) ~[minecraft_server.1.15.2.jar:?]
	at crn.<init>(SourceFile:51) ~[minecraft_server.1.15.2.jar:?]
	at crp.a(SourceFile:113) ~[minecraft_server.1.15.2.jar:?]
	at crp.a(SourceFile:109) ~[minecraft_server.1.15.2.jar:?]
	at net.minecraft.server.MinecraftServer.a(SourceFile:360) ~[minecraft_server.1.15.2.jar:?]
	at wd.d(SourceFile:219) ~[minecraft_server.1.15.2.jar:?]
	at net.minecraft.server.MinecraftServer.run(SourceFile:628) [minecraft_server.1.15.2.jar:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_252]
[14:19:01] [Server thread/ERROR]: This crash report has been saved to: /var/games/minecraft/servers/test3/./crash-reports/crash-2020-05-11_14.19.01-server.txt
[14:19:01] [Server thread/INFO]: Stopping server
[14:19:01] [Server thread/INFO]: Saving players
[14:19:01] [Server thread/INFO]: Saving worlds
[14:19:01] [Server thread/ERROR]: Exception stopping the server
java.lang.NullPointerException: null
	at net.minecraft.server.MinecraftServer.a(SourceFile:559) ~[minecraft_server.1.15.2.jar:?]
	at net.minecraft.server.MinecraftServer.s(SourceFile:587) ~[minecraft_server.1.15.2.jar:?]
	at wd.s(SourceFile:597) ~[minecraft_server.1.15.2.jar:?]
	at net.minecraft.server.MinecraftServer.run(SourceFile:689) [minecraft_server.1.15.2.jar:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_252]