Stuck with the Credential Helper Selector dialog

After pushing, Sourcetree asks me to select a Credential Helper. I tried the default one and nothing happened. I tried none and it gave an error. This has been asked by previous users and I’ve tried the solutions given but I can’t figure it out. Can anyone help?

EDIT: It seemed to work with “manager core” after a couple of attempts. I got lost down a rabbit hole trying some of the solutions given in the forum about authentication tokens, but it seems that wasn’t necessary? I think this section of the course would benefit from an addendum edited into the video to clarify this.