رفع اررور

[command_not_found 0]

با سلام دوستان چه طور میتونم این اررو رو برطرف کنم 

** Service (starter) Create **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = true **
** Activity (act_menu) Create, isFirst = true **
** Activity (act_menu) Resume **
** Activity (act_menu) Pause, UserClosed = false **
** Activity (act_new_inspection) Create, isFirst = true **
** Activity (act_new_inspection) Resume **
Error occurred on line: 0 (act_new_inspection)
java.lang.NullPointerException
 at xvs.ACL.ACL.StartPreview(ACL.java:180)
 at b4a.example.act_new_inspection._pnl_pic2_click(act_new_inspection.java:758)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:511)
 at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:710)
 at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:339)
 at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:249)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:511)
 at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:134)
 at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
 at anywheresoftware.b4a.BA.raiseEvent(BA.java:163)
 at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:78)
 at android.view.View.performClick(View.java:3511)
 at android.view.View$PerformClick.run(View.java:14105)
 at android.os.Handler.handleCallback(Handler.java:605)
 at android.os.Handler.dispatchMessage(Handler.java:92)
 at android.os.Looper.loop(Looper.java:137)
 at android.app.ActivityThread.main(ActivityThread.java:4424)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:511)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
 at dalvik.system.NativeStart.main(Native Method)
** Activity (act_new_inspection) Pause, UserClosed = true **