Should I leave out the UK completely? Any advice would be greatly appreciated

Hi all. I’m currently in the process of applying for my Tier 2 visa and there’s a question that asks about countries resided in for more than 12 months over the last 10 years. It subsequently asks you to provide a criminal record certificate from that country. I have lived in the UK for just over a year a few years ago. When I put the UK as one of the countries lived in, the system is still asking me to provide the criminal record certificate and I’m not able to continue my application unless I tick that I can provide same. So I’m not sure what to do. Should I leave out the UK completely? Any advice would be greatly appreciated.1