Media Library Issue

Hey

I am running Kentico 13, IIS10 and ASP .NET CORE

I am having issues with a content user today where they tried to add an image to the default kentico rich text widget. It displayed the two errors below and clearing the browser cache resolved this issue.

Does anyone know why this occurs as it was working perfectly fine yesterday?

Event ID:46085
Event type:Error
Event time:8/30/2023 3:12:05 PM
Source:Microsoft.AspNetCore.Antiforgery.DefaultAntiforgery
Event code:TokenDeserializeException
User ID:65
User name:public
Description:An exception was thrown while deserializing the token.
Message: The antiforgery token could not be decrypted.

Exception type: Microsoft.AspNetCore.Antiforgery.AntiforgeryValidationException
Stack trace:
at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgeryTokenSerializer.Deserialize(String serializedToken)
at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgery.GetCookieTokenDoesNotThrow(HttpContext httpContext)

Message: The key {Key} was not found in the key ring. For more information go to http://aka.ms/dataprotectionwarning

Exception type: System.Security.Cryptography.CryptographicException
Stack trace:
at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.UnprotectCore(Byte[] protectedData, Boolean allowOperationsOnRevokedKeys, UnprotectStatus& status)
at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.Unprotect(Byte[] protectedData)
at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgeryTokenSerializer.Deserialize(String serializedToken)

Event ID:46083
Event type:Error
Event time:8/30/2023 3:11:59 PM
Source:Media files usage
Event code:PROCESS_SEARCH_TASK
Description:Message: Error while processing index MediaFilesUsage: An error occurred while obtaining the index writer. This may be caused by a fatal error or index corruption. Consider rebuilding the index if the problem persists.

Exception type: CMS.Search.SearchIndexException
Stack trace:
at CMS.Search.SearchIndexProvider.GetWriter(Boolean create)
at CMS.Search.SearchHelper.Update(ILuceneSearchDocument iDoc, SearchIndexInfo indexInfo)
at CMS.MediaLibrary.PageSearchDocumentManager.UpdatePage(SearchIndexInfo searchIndex, TreeNode page)
at CMS.MediaLibrary.PageSearchDocumentManager.ExecutePageUpdate(SearchIndexInfo searchIndex, Int32 pageId)
at CMS.MediaLibrary.PageSearchDocumentManager.ProcessUpdateTask(SearchTaskInfo taskInfo, SearchIndexInfo searchIndex)
at CMS.MediaLibrary.MediaFilesUsageSearchIndexer.ExecuteUpdateTask(SearchTaskInfo taskInfo)
at CMS.MediaLibrary.MediaFilesUsageSearchIndexer.ExecuteTask(SearchTaskInfo searchTask)

Message: Access to the path '<Path>\App_Data\CMSModules\SmartSearch\MediaFilesUsage\segments_1zek' is denied.

Exception type: System.UnauthorizedAccessException
Stack trace:
at System.IO.FileSystem.DeleteFile(String fullPath)
at CMS.FileSystemStorage.File.Delete(String path)
at CMS.IO.File.Delete(String path)
at Lucene.Net.Index.IndexFileDeleter.DeleteFile(String fileName)
at Lucene.Net.Index.IndexFileDeleter.DecRef(String fileName)
at Lucene.Net.Index.IndexFileDeleter.DeleteCommits()
at Lucene.Net.Index.IndexFileDeleter..ctor(Directory directory, IndexDeletionPolicy policy, SegmentInfos segmentInfos, StreamWriter infoStream, DocumentsWriter docWriter, HashSet`1 synced)
at Lucene.Net.Index.IndexWriter.Init(Directory d, Analyzer a, Boolean create, IndexDeletionPolicy deletionPolicy, Int32 maxFieldLength, IndexingChain indexingChain, IndexCommit commit)
at Lucene.Net.Index.IndexWriter..ctor(Directory d, Analyzer a, Boolean create, MaxFieldLength mfl)
at CMS.Search.Lucene3.LuceneIndexWriter..ctor(Directory directory, Analyzer a, Boolean create)
at CMS.Search.Lucene3.LuceneSearchManager.CreateIndexWriter(String path, ISearchAnalyzer analyzer, Boolean create)
at CMS.Search.SearchManager.CreateIndexWriter(String path, ISearchAnalyzer analyzer, Boolean create)
at CMS.Search.SearchIndexProvider.GetWriter(Boolean create)