YaCy cannot start: SolrCore 'collection1'

I have 2 instances of yacy not starting I only kept 1.
I changed all permissions 777 no luck as suggested on the forum.

Does anyone want a copy to have a look and try to fix it?

http://58.96.112.6/index.php/s/GL5PZDrqMRk2pDq
It will take ~4 hours to download. 13 GB

Thanks

E 2025/03/07 15:01:26 STARTUP * YaCy cannot start: SolrCore 'collection1' is not available due to init failure: Error opening new searcher
org.apache.solr.core.SolrCoreInitializationException: SolrCore 'collection1' is not available due to init failure: Error opening new searcher
	at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:2106)
	at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:2079)
	at net.yacy.cora.federate.solr.instance.EmbeddedInstance.<init>(EmbeddedInstance.java:106)
	at net.yacy.search.index.Fulltext.connectLocalSolr(Fulltext.java:163)
	at net.yacy.search.Switchboard.<init>(Switchboard.java:593)
	at net.yacy.yacy.startup(yacy.java:212)
	at net.yacy.yacy.main(yacy.java:809)
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1204)
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1048)
	at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1560)
	at org.apache.solr.core.CoreContainer.lambda$load$10(CoreContainer.java:950)
	at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:197)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:259)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
	at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:2426)
	at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:2559)
	at org.apache.solr.core.SolrCore.initSearcher(SolrCore.java:1263)
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1148)
	... 9 more
Caused by: org.apache.lucene.index.CorruptIndexException: Unexpected file read error while reading index. (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/home/nextcloud/Downloads/yacy_search_server_universal/DATA/INDEX/freeworld/SEGMENTS/solr_9_0/collection1/data/index/segments_2b4")))
	at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:301)
	at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:288)
	at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1079)
	at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:145)
	at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:110)
	at org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:258)
	at org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:125)
	at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:2378)
	... 12 more
Caused by: java.nio.file.NoSuchFileException: /home/nextcloud/Downloads/yacy_search_server_universal/DATA/INDEX/freeworld/SEGMENTS/solr_9_0/collection1/data/index/_1ba5.si
	at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
	at java.base/sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:182)
	at java.base/java.nio.channels.FileChannel.open(FileChannel.java:292)
	at java.base/java.nio.channels.FileChannel.open(FileChannel.java:345)
	at org.apache.lucene.store.MMapDirectory.openInput(MMapDirectory.java:234)
	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:152)
	at org.apache.lucene.codecs.lucene90.Lucene90SegmentInfoFormat.read(Lucene90SegmentInfoFormat.java:102)
	at org.apache.lucene.index.SegmentInfos.parseSegmentInfos(SegmentInfos.java:406)
	at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:363)
	at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:299)
	... 19 more
	Suppressed: org.apache.lucene.index.CorruptIndexException: checksum passed (95c0a401). possibly transient resource issue, or a Lucene or JVM bug (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/home/nextcloud/Downloads/yacy_search_server_universal/DATA/INDEX/freeworld/SEGMENTS/solr_9_0/collection1/data/index/segments_2b4")))
		at org.apache.lucene.codecs.CodecUtil.checkFooter(CodecUtil.java:500)
		at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:370)
		... 20 more

looks like the solr database is corrupted. did you change something before, or it just started out of the blue?

Just started them after about 1 month of not running.

the log complains about some missing files:

do they exist?

No its not there.