ArgumentError: embedded NULs are not allowed in C strings

[versipellis]

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Have a pretty big dataset I'm working on that's stored as a bunch of nested Dicts (originally from a JSON file). I can't share the data, but trying to do JLD.save("./file/name/here.jld", "data", data) throws ArgumentError: embedded NULs are not allowed in C strings:

Is there a workaround for this?