[11:11:45 WARN]: Failed to handle packet for /127.0.0.1:52647
java.lang.NullPointerException: null
        at net.minecraft.server.v1_14_R1.WorldProviderNormal.a(WorldProviderNormal.java:162) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.EntityPlayer.a(EntityPlayer.java:177) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.EntityPlayer.<init>(EntityPlayer.java:107) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.PlayerList.attemptLogin(PlayerList.java:511) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.LoginListener.c(LoginListener.java:149) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.LoginListener.tick(LoginListener.java:65) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.NetworkManager.a(NetworkManager.java:270) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.ServerConnection.c(ServerConnection.java:129) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1216) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:420) ~[patched_1.14.3.jar:git-Paper-127]        at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:1064) ~[patched_1.14.3.jar:git-Paper-127]
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:908) ~[patched_1.14.3.jar:git-Paper-127]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]
[11:11:45 INFO]: com.mojang.authlib.GameProfile@16d1ade2[id=f47cb903-e981-448d-b0ea-2099adcfce86,name=MathieuAR,properties={textures=[com.mojang.authlib.properties.Property@5b686375]},legacy=false] (/127.0.0.1:52647) lost connection: Internal server error