Reading data file fails when original package that created the data changed about jld2.jl HOT 5 CLOSED

It looks like you are trying to load data with a new version of DifferentialEquations.jl that is not compatible with the older version. You can try to find out which version you used when writing the file and install that (older) version to load your data.

from jld2.jl.

This part is perfectly clear, but it is a dependency hell. Is there any other option to save the data?

from jld2.jl.

You could think about what data you really need to store.
It is probably not the full DifferentialEquations.jl solution object but rather the result arrays directly.
That is a bit of extra work but much more reliable.

from jld2.jl.

This part is also perfectly clear. And we will do that in the future by avoiding JLD2, i.e. using more robust data storage and direct arrays.

from jld2.jl.

Then I don't understand your question.
There is no magic solution that would tell JLD2 to guess what your data means and what should be done to generate new changed structures from this.
If you know a method to upgrade the old structure to the new one you can use the steps outlined in the documentation:
https://juliaio.github.io/JLD2.jl/dev/advanced/

from jld2.jl.