Reset password feature not working

Hello,

When I try to use the Reset password feature the page redirect me to the sign-in page with this message : “Password authentication is unavailable.”

I have this log in the “gitlab-ctl tail” :

> ==> /var/log/gitlab/gitlab-rails/production.log <== Started POST "/users/password" for 92.***.***.190 at 2019-07-29 08:52:36 +0000 Processing by PasswordsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "user"=>{"email"=>"m.***@***.fr"}} Redirected to https://gitlab.***.fr/users/sign_in Filter chain halted as :check_password_authentication_available rendered or redirected Completed 302 Found in 16ms (ActiveRecord: 1.6ms | Elasticsearch: 0.0ms) Started GET "/users/sign_in" for 92.***.***.190 at 2019-07-29 08:52:36 +0000 Processing by SessionsController#new as HTML

How to enable the reset password feature ?

Thanks.