Why did Stukas bomb Odiham during the Battle of Britain

In the very interesting book Stuka Attack by Andy Saunders
https://www.amazon.co.uk/Stuka-Attack-Dive-bombing-Assault-England/dp/1908117354
it mentions Stuka’s bombing Odiham.
However a quick google shows the airfield not operational until 1943.
So why did they bomb Odiham and, if as suspected an error what were they possibly trying to bomb?

BTW Convoy Peewit is a good read too.