Why does app_local_data_dir() return a Result?

[danielniccoli]

I'm new to Rust and Tauri. I was wondering why app_local_data_dir() returns a Result. Shouldn't I as a developer expect that Tauri manages these folders for me and ensures that they exist, when I need to access them? Consequently, if they do not exist, am I supposed to create them manually? (Which I do not think is a good idea.) Hence, should Tauri not fix the problem or panic, instead of asking me what to do about it?