Hi,

Recently we've been getting an error on our App Service Instance of Umbraco 8.8.1, where by when we attempt to save a normal page we get an error exception.

When I look through the logs, I can see this error occurred:-

System.AggregateException: Exceptions were thrown by listed actions. ---> Lucene.Net.Store.AlreadyClosedException: this IndexReader is closed at Lucene.Net.Index.IndexReader.EnsureOpen() in d:\Lucene.Net\FullRepo\trunk\src\core\Index\IndexReader.cs:line 206 at Lucene.Net.Index.DirectoryReader.GetFieldNames(FieldOption fieldNames) in d:\Lucene.Net\FullRepo\trunk\src\core\Index\DirectoryReader.cs:line 1055 at Examine.LuceneEngine.Providers.LuceneSearcher.GetAllIndexedFields() in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\LuceneSearcher.cs:line 101 at Examine.LuceneEngine.Providers.BaseLuceneSearcher.CreateQuery(String category, BooleanOperation defaultOperation, Analyzer luceneAnalyzer, LuceneSearchOptions searchOptions) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\BaseLuceneSearcher.cs:line 64

The only way to fix this is by restarting the App Service. Does anyone know a way to stop this from happening?

Thanks