Only if you checked in the Manifest of your project’s environment somewhere I believe and can recover it - this would have the exact versions/commits of all packages as they were the last time you worked on this.
Generally one has to be careful when adding/removing packages to an environment one would like to keep preserved as much as possible, cf the discussion here: Pin all packages of a project
Also while I appreciate that now might not be a great time for you to change Julia versions, 1.0.4 is quite outdated at this point and you’re missing out on a lot of improvements (not least on compile time/general snappiness of use). As it is still part of the v1 major series, there shouldn’t be major breaking changes so updating might be less painful than you think, so I’d probably just install 1.4.2 real quick an try running the code there!