Leaky gas bottle

Hi guys, just going through the last minute packing before departing tomorrow morning. Had the gas bottle filled today BUT- it seems to be leaking. The leak appears to be at the neck of the bottle. The bottle is only 12 months old. So my question is- is it practicable to have it fixed and where would you go to get this done? In the meantime I will leave it outside to slowly discharge its load and take the spare away with us this week. Thanks, doc.