blog-admin-backend--format-datetime: Wrong type argument: integerp, nil

[ovsoil]

execute blog-admin-start, cannot see the blogs list
message: blog-admin-backend--format-datetime: Wrong type argument: integerp, nil

[Puneeth Chaganti]

Which blog backend are you using? What kind of dates does your blog have?

[Deleted user]

It seems that blog-admin cannot recognize date format like this 2016/12/04, I am using hexo as backend

[Mike Zamansky]

Same problem here using Nikola