So I have not seen this specific panic but based on the info here's what I'm getting from this.
There is an item missing in launchd that the phone is expecting to be there but either isn't present or isn't running.
Launchd on Unix based operating systems like macOS (and iOS) is an operating service which manages launching other services your device needs when it loads. If it's referencing various services that are missing (wifid being WiFi related daemons and springboard is the process that manages the home screen) it's possible it's because there is some operating system corruption that is the underlying cause.
That is unusual for kernel panics on iPhone, but they do crop up. I would see if doing an os reinstall via [guide|133851|recovery mode|new_window=true] makes a difference. Just make sure when you connect the phone in recovery mode you tell it to update rather than restore unless you know you've got a good backup or don't mind wiping your phone. That's good practice even if you're only doing an update (which just reinstalls the current OS on top of what's already in your your phone) since it's possible you may error which could result in your phone being stuck in recovery due to an incomplete OS.