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  • Onno Sloof 23 posts 43 karma points
    Aug 18, 2015 @ 08:10
    Onno Sloof
    0

    contentService.GetChildren "Invalid Type: A Mapper could not be resolved based on the passed in Type"

    Hi,

    I've a console app to import items from a xml file into Umbraco. Before import I check existing items with contentService.GetChildren(int Id).

    I upgraded Umbraco to 7.2.8, and now I'm getting exception "Invalid Type: A Mapper could not be resolved based on the passed in Type".

    contentService.CountChildren(int Id) gives me the right amount of children so I know the items are there.

    Stacktrace:

    at Umbraco.Core.Persistence.Mappers.MappingResolver.<>c__DisplayClass1.<ResolveMapperByType>b__0(Type type1)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Umbraco.Core.Persistence.Mappers.MappingResolver.ResolveMapperByType(Type type)
   at Umbraco.Core.Persistence.Querying.ModelToSqlExpressionHelper`1..ctor()
   at Umbraco.Core.Persistence.Querying.Query`1.Where(Expression`1 predicate)
   at Umbraco.Core.Services.ContentService.GetChildren(Int32 id)

    What's wrong?

    Onno

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