Error while accessing Solr

I keep getting this error on my Hue browser:
"Error while accessing Solr: {"responseHeader":{"status":500,"QTime":2106,"params":{"facet":"false","sort":"created_at desc","facet.mincount":"1","facet.sort":"count","start":"0","user.name":"hue","q":":","facet.limit":"10","doAs":"admin","wt":"json","rows":"15"}},"error":{"msg":"Server at http://nmlgoibibofe20.edc.mihi.com:8983/solr/collection_Oct10_shard1_replica1 returned non ok status:500, message:Internal Server Error","trace":"org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException: Server at http://nmlgoibibofe20.edc.mihi.com:8983/solr/collection_Oct10_shard1_replica1 returned non ok status:500, message:Internal Server Error\n\tat org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:395)\n\tat org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:190)\n\tat org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:185)\n\tat org.apache.solr.handler.component.HttpShardHandler$1.call(HttpShardHandler.java:156)\n\tat org.apache.solr.handler.component.HttpShardHandler$1.call(HttpShardHandler.java:119)\n\tat java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)\n\tat java.util.concurrent.FutureTask.run(FutureTask.java:138)\n\tat java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)\n\tat java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)\n\tat java.util.concurrent.FutureTask.run(FutureTask.java:138)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)\n\tat java.lang.Thread.run(Thread.java:619)\n","code":500}} (error 500) "

I checked the logs for Solr which are causing this error and found this: "Caused by: org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): File does not exist: /solr/collection_Oct10/core_node3/data/index/_5rt5_Lucene41_0.tim"