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Type: Bug
Resolution: Awaiting Response
Fix Version/s: None
Affects Version/s: Minecraft 1.8.2-pre6, Minecraft 1.8.2-pre7, Minecraft 1.8.3, Minecraft 1.8.7, Minecraft 1.8.8, Minecraft 15w45a, Minecraft 1.8.9, Minecraft 15w51b, Minecraft 1.9 Pre-Release 4, Minecraft 1.9, Minecraft 1.9.2, Minecraft 1.9.4, Minecraft 1.10, Minecraft 1.11.2, Minecraft 1.12.1, Minecraft 1.12.2
Labels:
None
Environment:
Win7-64
Java 8U25

Confirmation Status:
Community Consensus

When entering a world in Realms or a server the console sometimes gets spammed with:

1.8.2-pre6

[10:11:14] [Client thread/INFO]: Setting user: Kumasasa
[10:11:14] [Client thread/INFO]: (Session ID is token:b169d5f70d1746778d0293048e5e0917:212c6adb6aad4b04ab210d52a98931c0)
[10:11:16] [Client thread/INFO]: LWJGL Version: 2.9.3
[10:11:17] [Client thread/INFO]: Reloading ResourceManager: Default
[10:11:17] [Sound Library Loader/INFO]: Starting up SoundSystem...
[10:11:18] [Thread-6/INFO]: Initializing LWJGL OpenAL
[10:11:18] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[10:11:18] [Thread-6/INFO]: OpenAL initialized.
[10:11:18] [Sound Library Loader/INFO]: Sound engine started
[10:11:22] [Client thread/INFO]: Created: 512x512 textures-atlas
[10:11:32] [Client thread/INFO]: Realms library version == 1.7.8-pre2
[10:11:33] [MCO Availability Checker #1/INFO]: Realms is available for this user
[10:11:57] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre6.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre6.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre6.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre6.jar:?]
Caused by: java.lang.NullPointerException
	at gw.a(SourceFile:153) ~[1.8.2-pre6.jar:?]
	at bcz.a(SourceFile:355) ~[1.8.2-pre6.jar:?]
	at gw.a(SourceFile:144) ~[1.8.2-pre6.jar:?]
	at gw$b.a(SourceFile:21) ~[1.8.2-pre6.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre6.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre6.jar:?]
	... 3 more
[10:11:57] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre6.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre6.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre6.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre6.jar:?]
Caused by: java.lang.NullPointerException
	at hg.a(SourceFile:42) ~[1.8.2-pre6.jar:?]
	at bcz.a(SourceFile:374) ~[1.8.2-pre6.jar:?]
	at hg.a(SourceFile:38) ~[1.8.2-pre6.jar:?]
	at hg.a(SourceFile:11) ~[1.8.2-pre6.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre6.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre6.jar:?]
	... 3 more
[10:11:57] [Client thread/FATAL]: Error executing task

1.8.2-pre7

[17:59:49] [Client thread/INFO]: Setting user: Kumasasa
[17:59:49] [Client thread/INFO]: (Session ID is token:c4cef29a5ab94c5f97380f862ce93d68:212c6adb6aad4b04ab210d52a98931c0)
[17:59:51] [Client thread/INFO]: LWJGL Version: 2.9.4
[17:59:53] [Client thread/INFO]: Reloading ResourceManager: Default, Misa Patch Les 1.8.zip, Misa.zip, XDBMisaPatchV1.4.zip
[17:59:53] [Client thread/WARN]: ResourcePack: ignored non-lowercase namespace: %s in %s
[17:59:56] [Sound Library Loader/INFO]: Starting up SoundSystem...
[17:59:57] [Thread-6/INFO]: Initializing LWJGL OpenAL
[17:59:57] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[17:59:57] [Thread-6/INFO]: OpenAL initialized.
[17:59:57] [Sound Library Loader/INFO]: Sound engine started
[18:00:20] [Client thread/INFO]: Created: 2048x2048 textures-atlas
[18:00:43] [Client thread/INFO]: Realms library version == 1.7.8-pre3
[18:00:44] [MCO Availability Checker #1/INFO]: Realms is available for this user
[18:00:54] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre7.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre7.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre7.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre7.jar:?]
Caused by: java.lang.NullPointerException
	at gj.a(SourceFile:42) ~[1.8.2-pre7.jar:?]
	at bcz.a(SourceFile:655) ~[1.8.2-pre7.jar:?]
	at gj.a(SourceFile:38) ~[1.8.2-pre7.jar:?]
	at gj.a(SourceFile:11) ~[1.8.2-pre7.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre7.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre7.jar:?]
	... 3 more
[18:00:54] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre7.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre7.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre7.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre7.jar:?]
Caused by: java.lang.NullPointerException
	at hg.a(SourceFile:42) ~[1.8.2-pre7.jar:?]
	at bcz.a(SourceFile:374) ~[1.8.2-pre7.jar:?]
	at hg.a(SourceFile:38) ~[1.8.2-pre7.jar:?]
	at hg.a(SourceFile:11) ~[1.8.2-pre7.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre7.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre7.jar:?]
	... 3 more
[18:03:35] [Client thread/INFO]: Stopping!
[18:03:35] [Client thread/INFO]: SoundSystem shutting down...
[18:03:36] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

[23:23:12] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at g.a(SourceFile:61) [1.8.7.jar:?]
	at ave.av(SourceFile:880) [1.8.7.jar:?]
	at ave.a(SourceFile:325) [1.8.7.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.7.jar:?]
Caused by: java.lang.NullPointerException
	at gv.a(SourceFile:153) ~[1.8.7.jar:?]
	at bcy.a(SourceFile:355) ~[1.8.7.jar:?]
	at gv.a(SourceFile:144) ~[1.8.7.jar:?]
	at gv$a.a(SourceFile:61) ~[1.8.7.jar:?]
	at fh$1.run(SourceFile:13) ~[1.8.7.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at g.a(SourceFile:60) ~[1.8.7.jar:?]
	... 3 more
[23:23:12] [Client thread/FATAL]: Error executing task

1.8.8

[22:50:38] [Client thread/INFO]: Realms library version == 1.7.31
[22:50:40] [MCO Availability Checker #1/INFO]: Realms is available for this user
...
[23:53:39] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at g.a(SourceFile:45) [1.8.8.jar:?]
	at ave.av(SourceFile:881) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
Caused by: java.lang.NullPointerException
	at bcy.a(SourceFile:277) ~[1.8.8.jar:?]
	at hm.a(SourceFile:66) ~[1.8.8.jar:?]
	at hm.a(SourceFile:9) ~[1.8.8.jar:?]
	at fh$1.run(SourceFile:13) ~[1.8.8.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at g.a(SourceFile:44) ~[1.8.8.jar:?]
	... 3 more
[23:53:39] [Client thread/FATAL]: Error executing task

Have no clear steps to reproduce, happens sometimes and sometimes not.

is duplicated by

MC-77659 Realms: Exceptions in Console with 1.8.2-pre7

Resolved

MC-81130 Error executing task

Resolved

MC-84674 If I try to open a link in the chat, it crashes my minecraft

Resolved

MC-91207 Exit game --> console spams with "Error executing task"

Resolved

MC-97956 Fatal Error when executing a specific task. [Client Thread/FATAL]

Resolved

MC-103794 after update 1.10 my system crashes

Resolved

MC-120321 Drop in fps on MC PC 1.12

Resolved

MC-121472 No entering a plot world on a server due to Java errors and Minecraft crash

Resolved

MC-124471 NullPointerException occured when changing servers

Resolved

MC-131316 Crash when joining a server

Resolved

MC-131913 Crasht binnen 5 minuten

Resolved

relates to

MC-81649 Missing error message cooldown

Resolved

(6 is duplicated by, 1 relates to)

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