java.lang.NullPointerException

Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference

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Stack trace

  • java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference at com.squareup.okhttp.FormEncodingBuilder.add(FormEncodingBuilder.java:38)

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