Comm error is a bad connection between the ecm and the IC.
p2303 is the rear ignition coil, circuit low
61005 I didn't find, but low fuel sys err is indicative of what the problem is, either low pump pressure or bad sensor.
P1047 is too wide of a spread between the front and rear O2 sensor, it's greater than 25, you have a stock ecm in the bike with an aftermarket exhaust, it will not go away unless you either replace the ecm with a race unit or tune the stock one to match what the exhaust needs.
That many errors, I'd look at charging the battery first and foremost, you may have a weak one that's causing other problems.