All doors stopped being able to be locked/unlocked with both door buttons and remote.

Hello, I have a 2015 Lancer GT and the electronics for all four doors stopped working. All other electronic systems are functioning normally. Shop thinks it’s an issue with the alternator, but other research I’ve done suggests maybe just the actuators in the doors are bad or the fuse is blown for that function. Anyone have similar experience and can help identify what the issue is? The car can still be unlocked manually just not electronically. Thanks