java.io.FileNotFoundException

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  • java.io.FileNotFoundException: ./world/session.lock (Permission denied) [07:29:31 WARN]:        at java.io.FileOutputStream.open(Native Method) [07:29:31 WARN]:        at java.io.FileOutputStream.<init>(FileOutputStream.java:221) [07:29:31 WARN]:        at java.io.FileOutputStream.<init>(FileOutputStream.java:171) [07:29:31 WARN]:        at net.minecraft.server.v1_8_R1.WorldNBTStorage.h(WorldNBTStorage.java:47) at net.minecraft.server.v1_8_R1.WorldNBTStorage.<init>(WorldNBTStorage.java:41) at net.minecraft.server.v1_8_R1.ServerNBTManager.<init>(SourceFile:19) at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:249) at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:211) at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) at java.lang.Thread.run(Thread.java:745)
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