Barista supremo thinks it doesn't have coffee beans

SOURCE: coffee beans don't grind even though there are

Sounds like you have a blockage in you grind passage. Try removing the brew group. Then inside on the roof of the machine where the brew unit was setting there is a drop chute where the coffee is dropped into the brew unit. From the left side of the drop chute pull down and back, and it will drop coffee. This will clear an opening that relieves pressure on the passage. There is a passage inside the drop chute area that goes to the grinder. Vacuum it out. It will be on the right side of the drop chute.
Once that is cleared go to the bean hopper. There is a lever on the right side of the bean hopper. Push the lever back to the largest number. You can push the lever to a larger number any time but it has to be grinding to pull to a smaller number. Now replace everything and make your coffee. Once you have made your coffee you can pull back to a number that was higher than the one you had it on, but only when the grinder is running.

SOURCE: Coffee beans out of message

HI
I hate to tell you this but your grinder is bad. The sensor in the grinder is messed up, and thinks its done grinding after 3 seconds. The grinder will have to be replaced. Sorry

SOURCE: No coffee brewing with beans, but with coffee brewing with ground coffee.

make sure you use very dry non-oily coffee beans