i want to import contacts from yahoo ios mail app

Is it possible to import my contacts from the iOS Yahoo mail app into eM Client?

It would be better to just sync your Yahoo! contacts with eM Client, rather than import. Go to Menu > Tools > Accounts, and add a new account by clicking on the + icon. Select Contacts > Yahoo!

I tried  this   but  it  gives me an  error message.
what  is  the next step.  I really  like em client and  would like  to continue  using  it

What is the error?