No Follow-the-author Button

Hi everyone! I’ve got a strange bug here - on an author’s profile page there’s no button which I could press to follow him or her. It should be on the right, but there’s anything, except it. Could anyone help me solve this problem?

I can see the Follow button on author’s profile page.

Make sure you’re signed in to your account and that user who you want to follow is an author.
Buyers don’t have follow button on their profile page.

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