ArgumentNullException with collection

[oriolaakeem]

ArgumentNullException: Value cannot be null. (Parameter 'property')
System.Linq.Expressions.Expression.Property(Expression expression, PropertyInfo property)
AutoMapper.Execution.ExpressionBuilder.ForEach(ParameterExpression loopVar, Expression collection, Expression loopContent)
AutoMapper.Internal.Mappers.CollectionMapper.g__MapCollectionCore|2_1(Expression destExpression, ref <>c__DisplayClass2_0 )
AutoMapper.Internal.Mappers.CollectionMapper.MapExpression(IGlobalConfiguration configurationProvider, ProfileMap profileMap, MemberMap memberMap, Expression sourceExpression, Expression destExpression)
AutoMapper.Execution.ExpressionBuilder.MapExpression(IGlobalConfiguration configurationProvider, ProfileMap profileMap, TypePair typePair, Expression sourceParameter, MemberMap propertyMap, Expression destinationParameter)
AutoMapper.Execution.TypeMapPlanBuilder.MapMember(MemberMap memberMap, Expression destinationMemberValue, ParameterExpression resolvedValue)
AutoMapper.Execution.TypeMapPlanBuilder.CreatePropertyMapFunc(MemberMap memberMap, Expression destination, MemberInfo destinationMember)
AutoMapper.Execution.TypeMapPlanBuilder.CreateAssignmentFunc(Expression createDestination)
AutoMapper.Execution.TypeMapPlanBuilder.CreateMapperLambda(HashSet typeMapsPath)
AutoMapper.TypeMap.Seal(IGlobalConfiguration configurationProvider, HashSet typeMapsPath)
AutoMapper.MapperConfiguration.Seal()
AutoMapper.MapperConfiguration..ctor(MapperConfigurationExpression configurationExpression)
Microsoft.Extensions.DependencyInjection.ServiceCollectionExtensions+<>c.b__12_2(IServiceProvider sp)
Autofac.Core.Activators.Delegate.DelegateActivator.ActivateInstance(IComponentContext context, IEnumerable parameters)
Autofac.Core.Activators.Delegate.DelegateActivator.b__2_0(ResolveRequestContext ctxt, Action next)
Autofac.Core.Resolving.Middleware.DisposalTrackingMiddleware.Execute(ResolveRequestContext context, Action next)
Autofac.Core.Resolving.Middleware.ActivatorErrorHandlingMiddleware.Execute(ResolveRequestContext context, Action next)

Source/destination types

// Put your source/destination types here

        CreateMap<NextOfKinType, NextOfKinTypeViewModel>().ReverseMap();

Mapping configuration

// Mapper.Initialize or just the CreateMap snippet 

        SourceMemberNamingConvention = new LowerUnderscoreNamingConvention();
        DestinationMemberNamingConvention = new PascalCaseNamingConvention();

Version: 11.0.0

Expected behavior

Actual behavior

Steps to reproduce

// Your calls to Mapper.Map or ProjectTo here, with source/destination objects constructed

[lbargaoanu]

A repro would help. Make a gist that we can execute and see fail.
Try the MyGet build.

[oriolaakeem]

I only added ShouldMapField = fi => false; to the configuration and everything works fine now with 11.0.0 upgrade

[oriolaakeem]

it will be nice as default as others with old code upgrading will have to do this whenever they upgrade

[lbargaoanu]

Maybe :) But without a repro we can't tell. Some people really want to map fields, so that's just a workaround.