An unhandled exception occurred while processing the request.

DbUpdateConcurrencyException: Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic concurrency exceptions.

Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(int commandIndex, int expectedRowsAffected, int rowsAffected)

Exception: Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic concurrency exceptions.
at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(Int32 commandIndex, Int32 expectedRowsAffected, Int32 rowsAffected)
at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ConsumeResultSetWithoutPropagation(Int32 commandIndex, RelationalDataReader reader)
at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.Consume(RelationalDataReader reader)
at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection)
at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(DbContext _, ValueTuple`2 parameters)
at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.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.Update(TEntity entity) in C:\Petals\Floristworks\nopCommerce_4.20_Source\src\Libraries\Nop.Data\EfRepository.cs:line 142

Nop.Data.EfRepository<TEntity>.Update(TEntity entity) in EfRepository.cs, line 147

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Variable Value
Accept */*
CLIENT-IP 44.220.182.198:45366
Connection Keep-Alive
DISGUISED-HOST www.stirlingflorist.com.au
Host www.stirlingflorist.com.au
Max-Forwards 10
MS-ASPNETCORE-TOKEN bc87da4f-88db-475a-b9d7-121b16c8c073
Referer http://www.stirlingflorist.com.au/flower-delivery-florist/balcatta-264750c.asp
User-Agent claudebot
WAS-DEFAULT-HOSTNAME floristworks.azurewebsites.net
X-AppService-Proto https
X-ARR-LOG-ID dd0a5d87-dd48-47fe-a2a7-d34408e6b5ac
X-ARR-SSL 2048|256|CN=GeoTrust Global TLS RSA4096 SHA256 2022 CA1, O="DigiCert, Inc.", C=US|CN=www.stirlingflorist.com.au
X-Forwarded-For 44.220.182.198:45366
X-Forwarded-Proto https
X-Forwarded-TlsVersion 1.3
X-Original-For 127.0.0.1:49409
X-Original-Proto http
X-Original-URL /flower-delivery-florist/balcatta-264750c.asp
X-SITE-DEPLOYMENT-ID floristworks
X-WAWS-Unencoded-URL /flower-delivery-florist/balcatta-264750c.asp