Vaishnav Tadiparthi

Just wanted to add, I tried adding `MeshCatMechanisms` on my Mac. Received the same 'unsatisfiable requirements' there as well. ```julia ERROR: Unsatisfiable requirements detected for package MeshCat [283c5d60]: MeshCat [283c5d60]...

I don't see the same issue with the vanilla Julia as you call it. So you think this might be a problem endemic to the JuliaPro environment?

@rdeits, switching the registries worked for me, do you still want me to try manually adding the packages with version numbers like you suggested?

Can I also recommend this paper on an Active Learning strategy for generating collocation points in PINNs? [Optimal Transport Based Refinement of Physics-Informed Neural Networks](https://arxiv.org/abs/2105.12307)

Any solution found for this yet? Getting the same issue on my Mac. ```julia ┌ Error: Error building `LightXML`: │ ┌ Warning: platform_key() is deprecated, use platform_key_abi() from now on...