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java.lang.NoClassDefFoundError: org.apache.commons.io.output.ByteArrayOutputStream	at org.apache.http.entity.mime.HttpMultipart.getTotalLength(HttpMultipart.java:219)	at org.apache.http.entity.mime.MultipartEntity.getContentLength(MultipartEntity.java:150)	at com.example.imtiaz.recognizer.UploadActivity$UploadFileToServer.UploadFile(UploadActivity.java:129)	at com.example.imtiaz.recognizer.UploadActivity$UploadFileToServer.doInBackground(UploadActivity.java:108)	at com.example.imtiaz.recognizer.UploadActivity$UploadFileToServer.doInBackground(UploadActivity.java:90)	at android.os.AsyncTask$2.call(AsyncTask.java:287)	at java.util.concurrent.FutureTask.run(FutureTask.java:234)