Shrine uploading image to google drive

Hi,

I am trying to upload images to google drive using Shrine. I followed instructions from this gem
https://github.com/verynear/shrine-google_drive_storage

I added this gems to my project

gem 'shrine'
gem 'shrine-google_drive_storage'

This is my config/shrine.rb

require "shrine"
require "shrine/storage/google_drive_storage"

Shrine.storages = {
  cache: Shrine::Storage::GoogleDriveStorage.new(prefix: "cache"),
  store: Shrine::Storage::GoogleDriveStorage.new(prefix: "store"),
}

Shrine::Storage::GoogleDriveStorage.new(
  prefix: "store",
  google_drive_client_secret_path: "#{Rails.root}/config/client_secret.json",
  drive_public_folder_id: '0Bz_kkknizZmZRXZzeXdua1FNUXc',
  google_drive_options: {
        path: proc { |style| "#{id}_#{photo.original_filename}_#{style}" },
      },
)

but when I try to upload image I get this error message

NameError (undefined local variable or method `content_type' for #Shrine::Storage::GoogleDriveStorage:0x00000004009868):

Does somebody know where I made mistake?

Thanks