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java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
at**.**.UriCodec.encode(UriCodec.java:132)
at**.**.URLEncoder.encode(URLEncoder.java:57)
at com.apicloud.alipayplus.OrderInfoUtil2_0.getSign(OrderInfoUtil2_0.java:155)
at com.apicloud.alipayplus.UzAliPayPlus.getOrderInfo(UzAliPayPlus.java:87)
at com.apicloud.alipayplus.UzAliPayPlus.access$2(UzAliPayPlus.java:79)
at com.apicloud.alipayplus.UzAliPayPlus$2.run(UzAliPayPlus.java:62)
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