I had the same problem once. Needed an unlocked keyring before starting the client. Now I unlock the keyring when logging in and everything works fine.
Can you check for/install the following packages, especially if you are on a Ubuntu 18.04 (-> Mint 19) based distribution: libgnome-keyring0 libgnome-keyring-common
After installing them, I think it is required to log out/log in or even reboot.
Thank you @Nytrm! I was losing my mind trying to resolve this on Fedora Cinnamon and then found this post. All it took was a “dnf install libgnome-keyring”, log out then back in and I was in business.