java.lang.RuntimeException

Unable to start activity ComponentInfo{probypro.posv2/probypro.posv2.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'probypro.posv2.Bill probypro.posv2.DatabaseHelper.getBill(long)' on a null object reference

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    • java.lang.RuntimeException: Unable to start activity ComponentInfo{probypro.posv2/probypro.posv2.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'probypro.posv2.Bill probypro.posv2.DatabaseHelper.getBill(long)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

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