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  • Huw Davies 7 posts 87 karma points
    16 days ago
    Huw Davies
    0

    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?

    Thanks

  • David Armitage 347 posts 1373 karma points
    1 week ago
    David Armitage
    0

    Hi Huw,

    From my understanding there is no upgrade path from v7 to v8. Umbraco 8 is a whole new beast

    https://our.umbraco.com/documentation/getting-started/setup/upgrading/version-specific#:~:text=There%20is%20no%20direct%20upgrade,to%20an%20Umbraco%208%20site.

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

    Regards

    David

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