System.ArgumentNullException: Value cannot be null. (Parameter 'entity') at Microsoft.EntityFrameworkCore.Utilities.Check.NotNull[T](T value, String parameterName) at Microsoft.EntityFrameworkCore.DbContext.Entry[TEntity](TEntity entity) at EscoraWeb.Data.CRegattaService.GetRegattaAsync(String IdRegatta, Boolean Log, String Url, Boolean Hashed) in C:\Prog\EscoraWeb\Data\CRegattaService.cs:line 129 at EscoraWeb.Areas.Regattas.Results.ResultsCombo.OnParametersSetAsync() in C:\Prog\EscoraWeb\Areas\Regattas\Results\ResultsCombo.razor.cs:line 100