[20:27:30] [main/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', name='PROD'
[20:27:33] [main/FATAL]: Failed to start the minecraft server
net.minecraft.server.v1_16_R1.SessionLock$ExceptionWorldConflict: /home/minecraft/./world/session.lock: already locked (possibly by other Minecraft instance?)
	at net.minecraft.server.v1_16_R1.SessionLock$ExceptionWorldConflict.a(SourceFile:98) ~[spigot-1.16.1.jar:git-Spigot-0287a20-7560f5f]
	at net.minecraft.server.v1_16_R1.SessionLock.a(SourceFile:44) ~[spigot-1.16.1.jar:git-Spigot-0287a20-7560f5f]
	at net.minecraft.server.v1_16_R1.Convertable$ConversionSession.<init>(Convertable.java:198) ~[spigot-1.16.1.jar:git-Spigot-0287a20-7560f5f]
	at net.minecraft.server.v1_16_R1.Convertable.c(Convertable.java:180) ~[spigot-1.16.1.jar:git-Spigot-0287a20-7560f5f]
	at net.minecraft.server.v1_16_R1.Main.main(Main.java:97) [spigot-1.16.1.jar:git-Spigot-0287a20-7560f5f]
	at org.bukkit.craftbukkit.Main.main(Main.java:202) [spigot-1.16.1.jar:git-Spigot-0287a20-7560f5f]