使用okhttp3报错 The type okio.ByteString cannot be resolved. It is indirectly referenced

编译出错的关键代码

        okhttp3.RequestBody body = okhttp3.RequestBody.create(contentType, param);

提示： The type okio.ByteString cannot be resolved. It is indirectly referenced from required .class files

解决：

已经引入了 okhttp-3.10.0.jar

再引入  okio-1.14.0.jar