Hello, I have Umbraco version 8.18.5 that ranning on Azure Web App and received an error about Umbraco boot failing.

Boot failed: Umbraco cannot run. See Umbraco's log file for more details.

-> Umbraco.Core.Exceptions.BootFailedException: Could not check the upgrade state.
   at Umbraco.Core.RuntimeState.GetUmbracoDatabaseState(IUmbracoDatabaseFactory databaseFactory) in D:\a\1\s\src\Umbraco.Core\RuntimeState.cs:line 264
   at Umbraco.Core.RuntimeState.DetermineRuntimeLevel(IUmbracoDatabaseFactory databaseFactory) in D:\a\1\s\src\Umbraco.Core\RuntimeState.cs:line 171
   at Umbraco.Core.Runtime.CoreRuntime.DetermineRuntimeLevel(IUmbracoDatabaseFactory databaseFactory, IProfilingLogger profilingLogger) in D:\a\1\s\src\Umbraco.Core\Runtime\CoreRuntime.cs:line 498
   at Umbraco.Core.Runtime.CoreRuntime.Boot(IRegister register, DisposableTimer timer) in D:\a\1\s\src\Umbraco.Core\Runtime\CoreRuntime.cs:line 205

-> System.Data.SqlServerCe.SqlCeException: There is a file sharing violation. A different process might be using the file. [ C:\home\site\wwwroot\App_Data\Umbraco.sdf ]
   at System.Data.SqlServerCe.SqlCeConnection.Open(Boolean silent)
   at System.Data.SqlServerCe.SqlCeConnection.Open()
   at NPoco.Database.OpenSharedConnectionImp(Boolean isInternal)
   at NPoco.Database.<QueryImp>d__164`1.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at NPoco.Database.Fetch[T](Sql sql)
   at NPoco.Database.Fetch[T](String sql, Object[] args)
   at Umbraco.Core.Persistence.SqlSyntax.SqlCeSyntaxProvider.GetConstraintsPerColumn(IDatabase db) in D:\a\1\s\src\Umbraco.Core\Persistence\SqlSyntax\SqlCeSyntaxProvider.cs:line 132
   at Umbraco.Core.Migrations.Install.DatabaseSchemaCreator.ValidateDbConstraints(DatabaseSchemaResult result) in D:\a\1\s\src\Umbraco.Core\Migrations\Install\DatabaseSchemaCreator.cs:line 179
   at Umbraco.Core.Migrations.Install.DatabaseSchemaCreator.ValidateSchema(IEnumerable`1 orderedTables) in D:\a\1\s\src\Umbraco.Core\Migrations\Install\DatabaseSchemaCreator.cs:line 163
   at Umbraco.Core.Persistence.UmbracoDatabaseExtensions.ValidateSchema(IUmbracoDatabase database, ILogger logger) in D:\a\1\s\src\Umbraco.Core\Persistence\UmbracoDatabaseExtensions.cs:line 54
   at Umbraco.Core.Persistence.UmbracoDatabaseExtensions.IsUmbracoInstalled(IUmbracoDatabase database, ILogger logger) in D:\a\1\s\src\Umbraco.Core\Persistence\UmbracoDatabaseExtensions.cs:line 68
   at Umbraco.Core.RuntimeState.GetUmbracoDatabaseState(IUmbracoDatabaseFactory databaseFactory) in D:\a\1\s\src\Umbraco.Core\RuntimeState.cs:line 242 

Sometimes, restarting Azure Web App service helps and Umbraco works, but not for long. Usually, it drops again in a couple of hours.

Did anyone face this issue?