Fridge started making loud gurgling/slushing sound all of a sudden. Can this be fixed?

Hi, last night my fridge started making a loud gurgling/slushing sound when the condenser is running. Its never made this noise before, and its incredibly loud. I attached a video below with the aforementioned noise. Its hard to describe the sound, it kinda sounds like a mix of gurgling water and a fan hitting something. I dont know the cause, but it sounds like its coming from the back of the fridge, not inside. So far I have made sure there is nothing blocking the vents inside the fridge, and have emptied the water tray. I dont know the exact model but its a crosley fridge.

Any help would be greatly appreciated, thank you