java.lang.NullPointerException

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  • java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference at okhttp3.HttpUrl.canonicalize(HttpUrl.java:1577) at okhttp3.FormBody$Builder.add(FormBody.java:110) at amplinno.com.visitors.RegisterActivity.registerMobileService(RegisterActivity.java:401) at amplinno.com.visitors.RegisterActivity.btnVerifyOkClicked(RegisterActivity.java:190) at amplinno.com.visitors.RegisterActivity$ButtonClick.onClick(RegisterActivity.java:150) at android.view.View.performClick(View.java:5204) at android.view.View$PerformClick.run(View.java:21153) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
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