[alibaba/fastjson]升级到1.2.61版本出现的问题

java.lang.NoSuchMethodError: com.alibaba.fastjson.serializer.MapSerializer.processValue(Lcom/alibaba/fastjson/serializer/JSONSerializer;Lcom/alibaba/fastjson/serializer/BeanContext;Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;I)Ljava/lang/Object; at com.alibaba.fastjson.serializer.MapSerializer.write(MapSerializer.java:200) at com.alibaba.fastjson.serializer.MapSerializer.write(MapSerializer.java:44) at com.alibaba.fastjson.serializer.JSONSerializer.write(JSONSerializer.java:285) at com.alibaba.fastjson.JSON.toJSONString(JSON.java:960)

请问这个是什么鬼，明明这个类里边可以找到这个processValue方法，后边的参数类型也都对的上