If you know how to work on your bike, and you have a maintenance manual, it will explain that there is a connector somewhere under the seat that you can short out in order to get an error code displayed on the instrument panel. Write the code down (since it gets reset as soon as you take the key out), and look it up in your manual (or google it). Then fix whatever problem it is reporting.
And I agree with Rowdy - stop wasting money on high-octane fuel. Read your owner's manual, and fuel the bike with whatever the manufacturer recommends. If you are in Europe, you should probably be using 93 octane. 97 or 98 (super / super-plus) is a waste of money - higher cost, zero benefit.
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