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    Expert tip

    This is caused by a missing dependency, add it to your gradle file: dependencies { compile 'org.apache.httpcomponents:httpclient-android:4.3.5.1' }

java.lang.NoSuchFieldError: INSTANCE	at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.(DefaultHttpRequestWriterFactory.java:52)	at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.(DefaultHttpRequestWriterFactory.java:56)	at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.(DefaultHttpRequestWriterFactory.java:46)	at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.(ManagedHttpClientConnectionFactory.java:72)	at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.(ManagedHttpClientConnectionFactory.java:84)	at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.(ManagedHttpClientConnectionFactory.java:59)	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager$InternalConnectionFactory.(PoolingHttpClientConnectionManager.java:493)	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.(PoolingHttpClientConnectionManager.java:149)	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.(PoolingHttpClientConnectionManager.java:138)	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.(PoolingHttpClientConnectionManager.java:114)	at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:726)	at org.apache.nutch.indexwriter.solr.SolrUtils.getSolrServer(SolrUtils.java:57)	at org.apache.nutch.indexwriter.solr.SolrIndexWriter.open(SolrIndexWriter.java:58)	at org.apache.nutch.indexer.IndexWriters.open(IndexWriters.java:75)	at org.apache.nutch.indexer.IndexerOutputFormat.getRecordWriter(IndexerOutputFormat.java:39)	at org.apache.hadoop.mapred.ReduceTask$OldTrackingRecordWriter.(ReduceTask.java:484)	at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:414)	at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:392)	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Subject.java:415)	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)