# ERROR: type UnionAll has no field name

**URL:** <https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269>\
**Category:** General Usage\
**Tags:** package, nightly\
**Created:** [February 24, 2017, 11:34am UTC](https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269 "2017-02-24T11:34:12Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [February 24, 2017, 11:34am UTC](https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269/1 "2017-02-24T11:34:12Z")

</div>

The following code is taken from DiffEqBase.jl, and I am trying to update it to v0.6. However, I get the following error:

```julia
julia> type ODESolution{uType,tType,rateType,P,A,IType}
         u::uType
         t::tType
         k::rateType
         prob::P
         alg::A
         interp::IType
         dense::Bool
         tslocation::Int
       end

julia> (sol::ODESolution)(t,deriv::Type=Val{0};idxs=nothing) = sol.interp(t,idxs,deriv)
ERROR: type UnionAll has no field name
Stacktrace:
 [1] kwftype(::Any) at .\boot.jl:239

```

I can even narrow it down a bit, and it still errors (with the same error)

```julia
 (sol::ODESolution)(t,deriv;idxs=nothing) = sol.interp(t,idxs,deriv)

```

Is this a known issue? Or is there some syntax change I am hitting here?

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<div class="post-metadata">

**Author:** ![yuyichao](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yuyichao/32/20_2.png) [@yuyichao](https://discourse.julialang.org/u/yuyichao)\
**Post date:** [February 24, 2017, 2:57pm UTC](https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269/2 "2017-02-24T14:57:54Z")

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It’s a bug.

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<div class="post-metadata">

**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [February 24, 2017, 7:16pm UTC](https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269/3 "2017-02-24T19:16:06Z")

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Is there already an issue for it?

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<div class="post-metadata">

**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [February 24, 2017, 7:51pm UTC](https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269/4 "2017-02-24T19:51:55Z")

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These are for `.parameters` at least:

[https://github.com/JuliaLang/julia/issues/20332](https://github.com/JuliaLang/julia/issues/20332)

[https://github.com/JuliaLang/julia/issues/20781](https://github.com/JuliaLang/julia/issues/20781)

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<div class="post-metadata">

**Author:** ![yuyichao](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yuyichao/32/20_2.png) [@yuyichao](https://discourse.julialang.org/u/yuyichao)\
**Post date:** [February 24, 2017, 8:07pm UTC](https://discourse.julialang.org/t/error-type-unionall-has-no-field-name/2269/5 "2017-02-24T20:07:16Z")

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It’s not for `.parameters`… I don’t think there’s one for `kwftype` yet.