Chances of getting into PhD without any technical paper?
Europe consists of several countries with different educational systems.
Typically you should have a master's degree before applying for a PhD degree. I would suggest searching for opportunities to get a master's degree first. But there probably are exceptions: see point 1.
Not having publications is fine in the disciples I know of. If you have publications before a PhD, that makes you a very strong candidate. If not, then you are just like everyone else on that matter.