java.lang.NullPointerException: Attempt to invoke virtual method 'com.sunmi.printerx.api.LineApi com.sunmi.printerx.PrinterSdk$Printer.lineApi()' on a null object reference

[nadeemabualarayes]

Null reference encountered during printing
java.lang.NullPointerException: Attempt to invoke virtual method 'com.sunmi.printerx.api.LineApi com.sunmi.printerx.PrinterSdk$Printer.lineApi()' on a null object reference
at com.sunmi.samples.printerx.TicketFragment.lambda$onViewCreated$0$com-sunmi-samples-printerx-TicketFragment(TicketFragment.java:52)
at com.sunmi.samples.printerx.TicketFragment$$ExternalSyntheticLambda0.onClick(Unknown Source:2)
at android.view.View.performClick(View.java:7527)
at android.view.View.performClickInternal(View.java:7500)
at android.view.View.-$$Nest$mperformClickInternal(Unknown Source:0)
at android.view.View$PerformClick.run(View.java:29538)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:7941)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:569)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1015)