Prøv med dette
1) (Close GMail, if it's open.) Go to your Contacts from the link
https://contacts.google.com/
2) Click on "Try Contacts preview", wait for the Contacts to appear with the new look, or, if you already are using the new look, click on "Go to the old version". Close "Contacts".
3) Try again to click on Contacts from GMail.
It worked for me (opening the Contacts in a new Tab).
I was also able to set the Contacts back to the old version and it still works.
https://productforums.google.com/forum/#!topic/gmail/79uMB7v87VQ