java.lang.NullPointerException

tip

Take a look at this blog post on how to set up Grid2 https://goo.gl/rxzbE6. A user related (in the email group on the source) that using older selenium libs solves this exception.

You have a different solution? A short tip here would help you and many other users who saw this issue last week.

  • java.lang.NullPointerException: Unexpected error at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213) at net.minecraftforge.common.UsernameCache.getLastKnownUsername(UsernameCache.java:101) at crazypants.enderio.teleport.anchor.BlockTravelAnchor.sendPrivateChatMessage(BlockTravelAnchor.java:147) at crazypants.enderio.teleport.telepad.BlockTelePad.openGui(BlockTelePad.java:135) at crazypants.enderio.teleport.telepad.BlockTelePad.openGui(BlockTelePad.java:125) at com.enderio.core.common.BlockEnder.func_149727_a(BlockEnder.java:102) at crazypants.enderio.BlockEio.func_149727_a(BlockEio.java:44) at net.minecraft.client.multiplayer.PlayerControllerMP.func_78760_a(PlayerControllerMP.java:326) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1447) at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1953) at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898) at net.minecraft.client.main.Main.main(SourceFile:148) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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