# LoadError: Can't differentiate loopinfo expression

**URL:** https://discourse.julialang.org/t/loaderror-cant-differentiate-loopinfo-expression/69067
**Category:** Machine Learning
**Tags:** differentiation, flux
**Created:** [October 1, 2021, 6:23pm UTC](https://discourse.julialang.org/t/loaderror-cant-differentiate-loopinfo-expression/69067 "2021-10-01T18:23:55Z")
**Posts on this page:** 1
**Showing post:** 8

<div class="post-metadata">

### Author: ![goerch](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/goerch/32/29122_2.png) [@goerch](https://discourse.julialang.org/u/goerch)
#### Post date: [October 4, 2021, 6:24pm UTC](https://discourse.julialang.org/t/loaderror-cant-differentiate-loopinfo-expression/69067/8 "2021-10-04T18:24:31Z")

</div>

Looks like you are in dependency hell;)

Maybe some help can be found here: [How to find package preventing others from updating - #3 by Ralph\_Smith](https://discourse.julialang.org/t/how-to-find-package-preventing-others-from-updating/8235/3)

```julia
Pkg.add(name="Zygote", version="0.6.17")

```

should tell you, which package is preventing the update.

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