I Get a java.lang.NullPointerException I cant fix

Newbie & Debugging Questions
#1

I sometimes get this error when i press the play button on my game and it crashes
Exception in thread “Thread-2” java.lang.NullPointerException
at com.GamerC4.main.Handler.render(Handler.java:25)
at com.GamerC4.main.Game.render(Game.java:149)
at com.GamerC4.main.Game.run(Game.java:96)
at java.lang.Thread.run(Unknown Source)

Here is my code