Yeah, that needs to be cleaned. You might want to clean the spray off of the fan blades…if it is sticky, it is making things worse.
Turn the machine off, unplug it, and use a pipe cleaner or old toothbrush to break up that ash buildup in the grate…you can vacuum the loosened dirt with a hose once you have it knocked down.
Then…You’re also going to need to clean the front of the fan blades, and that is going to be hard to do with that level of resin/glue residue buildup.
I did a write up on how to do that for the Pro model machines here. Be VERY careful and extremely patient. It’s going to be less time to take a couple of days to clean the fan, than to return the machine for repair.
Good luck!