error information

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Message: Could not find file 'C:\home\site\wwwroot\umbraco\Data\TEMP\ExamineIndexes\ExternalIndex\_acd.si'.

StackTrace:
at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options)
at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable`1 unixCreateMode)
at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable`1 unixCreateMode)
at System.IO.Strategies.FileStreamHelpers.ChooseStrategyCore(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable`1 unixCreateMode)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at Lucene.Net.Store.MMapDirectory.OpenInput(String name, IOContext context)
at Lucene.Net.Store.NRTCachingDirectory.OpenInput(String name, IOContext context)
at Lucene.Net.Store.Directory.OpenChecksumInput(String name, IOContext context)
at Lucene.Net.Codecs.Lucene46.Lucene46SegmentInfoReader.Read(Directory dir, String segment, IOContext context)
at Lucene.Net.Index.SegmentInfos.Read(Directory directory, String segmentFileName)
at Lucene.Net.Index.SegmentInfos.FindSegmentsFileAnonymousClass.DoBody(String segmentFileName)
at Lucene.Net.Index.SegmentInfos.FindSegmentsFile.Run(IndexCommit commit) --- End of stack trace from previous location ---
at Lucene.Net.Index.SegmentInfos.FindSegmentsFile.Run(IndexCommit commit)
at Lucene.Net.Index.SegmentInfos.FindSegmentsFile.Run()
at Lucene.Net.Index.SegmentInfos.Read(Directory directory)
at Lucene.Net.Index.IndexWriter..ctor(Directory d, IndexWriterConfig conf)
at Examine.Lucene.Providers.LuceneIndex.CreateIndexWriter(Directory d)
at Examine.Lucene.Providers.LuceneIndex.CreateIndexWriterInternal()
at Examine.Lucene.Providers.LuceneIndex.get_IndexWriter()
at Examine.Lucene.Providers.LuceneIndex.CreateSearcher()
at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode) --- End of stack trace from previous location ---
at System.Lazy`1.CreateValue()
at Examine.Lucene.Providers.LuceneIndex.get_Searcher()
at AspNetCore.Views_Pages_Search.ExecuteAsync() in C:\home\site\wwwroot\Views\Pages\Search.cshtml:line 136

Source: System.Private.CoreLib