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    Thrown when an application is trying to use or access an object whose reference equals to null but if you are getting no message, try using the option -XX:-OmitStackTraceInFastThrow.

Solutions on the web

via GitHub by animator013
, 1 year ago
This exception has no message.
via GitHub by weilantian
, 1 year ago
This exception has no message.
via GitHub by erkam2002
, 1 year ago
This exception has no message.
via GitHub by mfmfneko
, 2 years ago
This exception has no message.
via GitHub by ex00
, 1 year ago
This exception has no message.
via Google Groups by Stefan Bielenberg, 5 months ago
This exception has no message.
java.lang.NullPointerException: 	at java.io.Reader.(Reader.java:78)	at java.io.InputStreamReader.(InputStreamReader.java:113)	at cn.nukkit.utils.Utils.readFile(Utils.java:58)	at cn.nukkit.Server.(Server.java:210)	at cn.nukkit.Nukkit.main(Nukkit.java:65)