Stuck on 20% while updating

Hi

I am trying to update from the previous version to the latest version, but my update is stuck on 20% where it is initializing the site files.

Can you let me know two things

If I leave the update will this cause issues on the site?

Could it be something to do with a new server that I have just moved over to?

Unfortunately for now I cannot give you any login details for you to go and have a look.

Thanks