Building a self-hosted SaaS: What is your biggest pain point with deployment?

I just launched Bibiolink, a bio-link SaaS script designed for indie hackers who want to own their infrastructure rather than pay monthly subscriptions. We focused on a clean codebase and immediate Stripe - PayPal - Lemon Squeezy integration to remove billing friction. If you were setting up a micro-SaaS today, what is the one feature that would make or break a self-hosted script for you?