yet another server log

Started POST "/admin/v1/testimonials" for ::1 at 2019-07-06 23:19:40 +0300
Processing by Admin::TestimonialsController#create as JSON
  Parameters: {"name"=>"фывафв", "patronymic"=>"", "surname"=>"", "userpic"=>"", "company"=>"", "object_photo_1"=>"", "object_photo_2"=>"", "object_photo_3"=>"", "video"=>"", "text"=>"фывафыва"}
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2  [["id", 1], ["LIMIT", 1]]
  ↳ /home/yart/.rvm/gems/ruby-2.5.1/gems/activerecord-5.2.3/lib/active_record/log_subscriber.rb:98
  JwtBlacklist Exists (0.1ms)  SELECT  1 AS one FROM "jwt_blacklists" WHERE "jwt_blacklists"."jti" = $1 LIMIT $2  [["jti", "5b99128c-8e5b-4074-b1b4-ee500a756f86"], ["LIMIT", 1]]
  ↳ /home/yart/.rvm/gems/ruby-2.5.1/gems/activerecord-5.2.3/lib/active_record/log_subscriber.rb:98
Unpermitted parameter: :format
Completed 500 Internal Server Error in 2ms (ActiveRecord: 0.3ms)



ActiveSupport::MessageVerifier::InvalidSignature (ActiveSupport::MessageVerifier::InvalidSignature):

app/controllers/admin/testimonials_controller.rb:12:in `create'