Could you provide more details of the error message? Also could you check the versions of your Nexus and Nexus Prisma plugin? There was an update for Nexus after the initial version of this post, and the CRUD helpers now are disabled by default.
I updated this tut and the example repo, please check out this PR and let me know if it solves the problems!
BTW there's no global caching as far as I know, so there shouldn't be a problem if you defined some types in another project.
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