# Training on EnsembleProblem: ERROR: LoadError: Need an adjoint for constructor EnsembleSolution

**URL:** <https://discourse.julialang.org/t/training-on-ensembleproblem-error-loaderror-need-an-adjoint-for-constructor-ensemblesolution/42546>\
**Category:** General Usage\
**Tags:** diffeq, flux\
**Created:** [July 5, 2020, 3:50am UTC](https://discourse.julialang.org/t/training-on-ensembleproblem-error-loaderror-need-an-adjoint-for-constructor-ensemblesolution/42546 "2020-07-05T03:50:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![yanz4](https://avatars.discourse-cdn.com/v4/letter/y/b5e925/32.png) [@yanz4](https://discourse.julialang.org/u/yanz4)\
**Post date:** [July 5, 2020, 3:50am UTC](https://discourse.julialang.org/t/training-on-ensembleproblem-error-loaderror-need-an-adjoint-for-constructor-ensemblesolution/42546/1 "2020-07-05T03:50:34Z")

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