C# SqlException超时已在Dot net core 2.2中过期

我的网站是用4.1 nopcommerce平台构建的。现在我已经将这个网站的所有dll更新为最新版本。现在，它在正常情况下工作正常，但在某些时候，我会收到一个关于“SqlException:Timeout expired”的错误日志。现在如何解决这个问题。我查看了很多帖子，很多人认为我为解决这个问题所做的改变，但我找不到任何解决方案

详细记录如下

System.Exception: Microsoft.EntityFrameworkCore.DbUpdateException: An error occurred while updating the entries. See the inner exception for details. ---> 
System.Data.SqlClient.SqlException: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.
The statement has been terminated. ---> System.ComponentModel.Win32Exception: The wait operation timed out
   --- End of inner exception stack trace ---
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.Execute(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteReader(IRelationalConnection connection, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection)
   --- End of inner exception stack trace ---
   at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(DbContext _, ValueTuple`2 parameters)
   at Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.ExecuteImplementation[TState,TResult](Func`3 operation, Func`3 verifySucceeded, TState state)
   at Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable`1 commandBatches, IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabase.SaveChanges(IReadOnlyList`1 entries)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IReadOnlyList`1 entriesToSave)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChanges()
   at Nop.Data.EfRepository`1.Insert(TEntity entity) in C:\\Libraries\Nop.Data\EfRepository.cs:line 100 ---> Microsoft.EntityFrameworkCore.DbUpdateException: An error occurred while updating the entries. See the inner exception for details. ---> System.Data.SqlClient.SqlException: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.
The statement has been terminated. ---> System.ComponentModel.Win32Exception: The wait operation timed out
   --- End of inner exception stack trace ---
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.Execute(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteReader(IRelationalConnection connection, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection)
   --- End of inner exception stack trace ---
   at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(DbContext _, ValueTuple`2 parameters)
   at Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.ExecuteImplementation[TState,TResult](Func`3 operation, Func`3 verifySucceeded, TState state)
   at Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable`1 commandBatches, IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabase.SaveChanges(IReadOnlyList`1 entries)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IReadOnlyList`1 entriesToSave)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChanges()
   at Nop.Data.EfRepository`1.Insert(TEntity entity) in C:\\Libraries\Nop.Data\EfRepository.cs:line 100
   --- End of inner exception stack trace ---
   at Nop.Data.EfRepository`1.Insert(TEntity entity) in C:\\Libraries\Nop.Data\EfRepository.cs:line 105
   at Nop.Services.Customers.CustomerService.InsertGuestCustomer(Int32 storeId) in C:\\Libraries\Nop.Services\Customers\CustomerService.cs:line 446
   at Nop.Web.Framework.WebWorkContext.get_CurrentCustomer() in C:\\Presentation\Nop.Web.Framework\WebWorkContext.cs:line 250
   at Nop.Web.Framework.WebWorkContext.get_WorkingLanguage() in C:\\Presentation\Nop.Web.Framework\WebWorkContext.cs:line 360
   at Nop.Web.Framework.Globalization.CultureMiddleware.SetWorkingCulture(IWebHelper webHelper, IWorkContext workContext) in C:\\Presentation\Nop.Web.Framework\Globalization\CultureMiddleware.cs:line 62
   at Nop.Web.Framework.Globalization.CultureMiddleware.Invoke(HttpContext context, IWebHelper webHelper, IWorkContext workContext) in C:\\Presentation\Nop.Web.Framework\Globalization\CultureMiddleware.cs:line 82
   at lambda_method(Closure , Object , HttpContext , IServiceProvider )
   at Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.<>c__DisplayClass4_1.<UseMiddleware>b__2(HttpContext context)
   at Nop.Services.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) in C:\\Libraries\Nop.Services\Authentication\AuthenticationMiddleware.cs:line 79
   at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Nop.Core.Http.InstallUrlMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\\Libraries\Nop.Core\Http\InstallUrlMiddleware.cs:line 51
   at Nop.Core.Http.KeepAliveMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\\Libraries\Nop.Core\Http\KeepAliveMiddleware.cs:line 50
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.ResponseCompression.ResponseCompressionMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)

System.Exception:Microsoft.EntityFrameworkCore.DbUpdateException:更新条目时出错。有关详细信息，请参见内部异常。-->
System.Data.SqlClient.SqlException:超时已过期。操作完成前已过超时时间，或者服务器没有响应。
该语句已终止。-->System.ComponentModel.Win32异常：等待操作超时
---内部异常堆栈跟踪的结束---
位于System.Data.SqlClient.SqlConnection.OneError（SqlException异常，布尔断开连接，操作'1 wrapCloseInAction）
位于System.Data.SqlClient.SqlInternalConnection.OneError（SqlException异常，布尔断开连接，操作'1 wrapCloseInAction）
位于System.Data.SqlClient.TdsParser.ThroweException和Warning（TdsParserStateObject StateObjectStateObj、布尔调用方连接锁、布尔异步关闭）
位于System.Data.SqlClient.TdsParser.TryRun（RunBehavior RunBehavior、SqlCommand cmdHandler、SqlDataReader dataStream、BulkCopySimpleResultSet bulkCopyHandler、TdsParserStateObject stateObj、Boolean和dataReady）
位于System.Data.SqlClient.SqlDataReader.TryConsumeMetaData（）处
在System.Data.SqlClient.SqlDataReader.get_MetaData（）处
位于System.Data.SqlClient.SqlCommand.FinishExecuteReader（SqlDataReader ds、RunBehavior、String ResetOptions String）
位于System.Data.SqlClient.SqlCommand.RunExecuteReaderTds（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、Boolean async、Int32超时、任务和任务、Boolean asyncWrite、SqlDataReader ds）
位于System.Data.SqlClient.SqlCommand.RunExecuteReader（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、TaskCompletionSource`1 completion、Int32 timeout、Task&Task、Boolean asyncWrite、String方法）
位于System.Data.SqlClient.SqlCommand.ExecuteReader（CommandBehavior）
位于System.Data.SqlClient.SqlCommand.ExecuteDbDataReader（CommandBehavior）
在Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.Execute（IRelationalConnection连接、DbCommandMethod executeMethod、iRadonlyDictionary`2参数值）
位于Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteReader（IRelationalConnection连接，IReadOnlyDictionary`2参数值）
在Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute（IRelationalConnection）
---内部异常堆栈跟踪的结束---
在Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute（IRelationalConnection）
在Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute中（DbContext 389;，ValueTuple`2参数）
在Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.ExecuteImplementation[TState，TResult]（Func`3操作，Func`3验证成功，TState）
在Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.Execute[TState，TResult]（TState状态，Func`3操作，Func`3验证成功）
在Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute（IEnumerable`1 commandBatches，IRelationalConnection）
位于Microsoft.EntityFrameworkCore.Storage.RelationalDatabase.SaveChanges（IReadOnlyList`1条目）
位于Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges（IReadOnlyList`1 entriesToSave）
位于Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges（布尔接受更改成功）
在Microsoft.EntityFrameworkCore.DbContext.SaveChanges（布尔接受更改成功）
在Microsoft.EntityFrameworkCore.DbContext.SaveChanges（）中
在C:\\Libraries\Nop.Data\EfRepository.cs中的Nop.Data.EfRepository`1.Insert（TEntity entity）处：第100行-->Microsoft.EntityFrameworkCore.DbUpdateException:更新条目时出错。有关详细信息，请参见内部异常。-->System.Data.SqlClient.SqlException:超时已过期。操作完成前已过超时时间，或者服务器没有响应。
该语句已终止。-->System.ComponentModel.Win32异常：等待操作超时
---内部异常堆栈跟踪的结束---
位于System.Data.SqlClient.SqlConnection.OneError（SqlException异常，布尔断开连接，操作'1 wrapCloseInAction）
位于System.Data.SqlClient.SqlInternalConnection.OneError（SqlException异常，布尔断开连接，操作'1 wrapCloseInAction）
位于System.Data.SqlClient.TdsParser.ThroweException和Warning（TdsParserStateObject StateObjectStateObj、布尔调用方连接锁、布尔异步关闭）
位于System.Data.SqlClient.TdsParser.TryRun（RunBehavior RunBehavior、SqlCommand cmdHandler、SqlDataReader dataStream、BulkCopySimpleResultSet bulkCopyHandler、TdsParserStateObject stateObj、Boolean和dataReady）
位于System.Data.SqlClient.SqlDataReader.TryConsumeMetaData（）处
在System.Data.SqlClient.SqlDataReader.get_MetaData（）处
位于System.Data.SqlClient.SqlCommand.FinishExecuteReader（SqlDataReader ds、RunBehavior、String ResetOptions String）
位于System.Data.SqlClient.SqlCommand.RunExecuteReaderTds（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、Boolean async、Int32超时、任务和任务、Boolean asyncWrite、SqlDataReader ds）
位于System.Data.SqlClient.SqlCommand.RunExecuteReader（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、TaskCompletionSource`1 completion、Int32 timeout、Task&Task、Boolean asyncWrite、String方法）
位于System.Data.SqlClient.SqlCommand.ExecuteReader（CommandBehavior）