What would be more sane? Allowing things to remain broken at night? Having someone who is not a software engineer fix it?
If your product is really so important that it can't be down, hire more engineers and pass the markup to your customers.
I'm glad I live in the country where you have to have 11 hours between end of work and start of work(except for special cases afaik).
If the company cannot afford that, then the product is not that important and can remain broken until the morning.
Even 24h fast food places hire 3 people (each working 8h)!
Manual fixes should never be done in a hurry, and if your system is that fragile, I really wonder about the competency of your senior employees and leadership.