Nukkit Errors

scottalanmiller

Running Nukkit on Oracle Java 8_111 gives me the following errors at startup:

19:46:55 [ERROR] Error while registering cn.nukkit.block.BlockSlab
java.lang.InstantiationException: cn.nukkit.block.BlockSlab
	at java.lang.Class.newInstance(Class.java:427)
	at cn.nukkit.block.Block.init(Block.java:514)
	at cn.nukkit.Server.<init>(Server.java:367)
	at cn.nukkit.Nukkit.main(Nukkit.java:65)
Caused by: java.lang.NoSuchMethodException: cn.nukkit.block.BlockSlab.<init>()
	at java.lang.Class.getConstructor0(Class.java:3082)
	at java.lang.Class.newInstance(Class.java:412)
	... 3 more

scottalanmiller

Once up and running it acts like it works, but then gets this error and is useless.

19:52:02 [CRITICAL] Could not tick level "world": java.lang.NullPointerException
19:52:02 [ALERT] java.lang.NullPointerException