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Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference at com.example.vari.new_varri.Scrap_Report$1.onCheckedChanged(Scrap_Report.java:142) at android.widget.RadioGroup.setCheckedId(RadioGroup.java:173)