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  • Huw Davies 7 posts 87 karma points
    16 days ago
    Huw Davies

    Back office DataTypes page results in error when trying to load

    I'm currently trying to update our website from V7.6.5 to V8.6.1. I had to upgrade the Database through a couple of other versions before I could get the site to load. The site itself now loads however when I go into the back office and try to view or modify the data types I get the following error:

    Unhandled controller exception occurred for request '"http://localhost:2593/umbraco/backoffice/UmbracoTrees/DataTypeTree/GetNodes?id=-1&application=settings&tree=&use=main&culture="'

    System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.Collections.Generic.Dictionary2.get_Item(TKey key) at Umbraco.Web.Trees.DataTypeTreeController.<>c__DisplayClass2_0.<GetTreeNodes>b__5(IEntitySlim dt) at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Collections.Generic.List1.InsertRange(Int32 index, IEnumerable1 collection) at Umbraco.Web.Trees.DataTypeTreeController.GetTreeNodes(String id, FormDataCollection queryStrings) at Umbraco.Web.Trees.TreeControllerBase.GetNodes(String id, FormDataCollection queryStrings) at lambdamethod(Closure , Object , Object[] ) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>cDisplayClass62.

    @MessageTemplate : Unhandled controller exception occurred for request '{RequestUrl}'

    RequestUrl : http://localhost:2593/umbraco/backoffice/UmbracoTrees/DataTypeTree/GetNodes?id=-1&application=settings&tree=&use=main&culture=

    SourceContext : Umbraco.Web.Trees.DataTypeTreeController

    Any ideas on how to fix this?


  • David Armitage 347 posts 1373 karma points
    1 week ago
    David Armitage

    Hi Huw,

    From my understanding there is no upgrade path from v7 to v8. Umbraco 8 is a whole new beast,to%20an%20Umbraco%208%20site.

    Personally I wouldn't recommend trying to upgrade from 7 - 8.



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