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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

Solutions on the web

via GitHub by StFS
, 1 year ago
via GitHub by tazmaniax
, 8 months ago
This exception has no message.
via by Unknown author, 2 years ago
via Google Groups by Andreas Beckmann, 2 years ago
via JIRA by Jim Procter, 2 years ago
via Stack Overflow by UltimaWeapon
, 2 years ago
java.lang.NullPointerException: 	at java.util.Hashtable.put(	at java.util.Hashtable.putAll(	at org.aeonbits.owner.PropertiesManager.merge(	at org.aeonbits.owner.PropertiesManager.load(	at org.aeonbits.owner.PropertiesManager.load(	at org.aeonbits.owner.PropertiesInvocationHandler.(	at org.aeonbits.owner.DefaultFactory.create(	at org.aeonbits.owner.ConfigFactory.create(	at org.aeonbits.owner.issues.Issue184.before(