Lucene3x codec error after upgrade from AEM 6.0 or 6.1 to 6.4 or later | AEM 6.x

22.05.2018 16:48:19.289 *WARN* [async-index-update-async] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor Failed to index the node [/home/users/a/admin/.tokens/2018-05-22T16.11.10.600-05.00]
java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene3x' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: [Lucene40, Lucene41, Lucene42, Lucene45, Lucene46, oakCodec]
at org.apache.lucene.util.NamedSPILoader.lookup(NamedSPILoader.java:109)
at org.apache.lucene.codecs.Codec.forName(Codec.java:95)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:370)
at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:404)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:843)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:694)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:400)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:746)
at org.apache.jackrabbit.oak.plugins.index.lucene.writer.DefaultIndexWriter.getWriter(DefaultIndexWriter.java:164)
at org.apache.jackrabbit.oak.plugins.index.lucene.writer.DefaultIndexWriter.updateDocument(DefaultIndexWriter.java:92)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor.addOrUpdate(LuceneIndexEditor.java:250)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor.leave(LuceneIndexEditor.java:140)
at org.apache.jackrabbit.oak.spi.commit.CompositeEditor.leave(CompositeEditor.java:74)
at org.apache.jackrabbit.oak.spi.commit.VisibleEditor.leave(VisibleEditor.java:63)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeAdded(EditorDiff.java:130)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:500)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord$2.childNodeChanged(MapRecord.java:401)
at org.apache.jackrabbit.oak.segment.MapRecord$3.childNodeChanged(MapRecord.java:442)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:490)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:433)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:391)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:555)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord$2.childNodeChanged(MapRecord.java:401)
at org.apache.jackrabbit.oak.segment.MapRecord$3.childNodeChanged(MapRecord.java:442)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:490)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:433)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:391)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:415)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord$2.childNodeChanged(MapRecord.java:401)
at org.apache.jackrabbit.oak.segment.MapRecord$3.childNodeChanged(MapRecord.java:442)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:490)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:433)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:391)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.updateIndex(AsyncIndexUpdate.java:695)
at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.runWhenPermitted(AsyncIndexUpdate.java:543)
at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.run(AsyncIndexUpdate.java:402)
at org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:118)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)