.zshrc:17: module_init: function definition file not found

I think the takeaway in that article is that the user was allowing conda to insert stuff into the .zshrc and ultimately, you, not a third-party tool is responsible for the integrity of that ~/.zshrc file. That error message alone is insufficient to identify what caused it, or how to solve it.

Rename that ~/.zshrc to ~/.zshrc_old, and create a new one with a proper PATH and prompt statement and use that until you can figure out what in the original file caused the problem.

Take a look at this Apple StackExchange article about one potential cause of this problem and the recommendation.