carrierwave_direct not working with rails 6 undefined method 'attr_accessible'

[ahmdelemam]

Ruby Version:- 2.6.3
Rails Version:- 6.0.0.rc1
Carrierwave Version:- 2.0.0.rc
Carrierwave_direct Version:- 2.1.0

I just followed the installation instructions, when I try to add this line to my uploader
include CarrierWaveDirect::Uploader
I got this error
undefined method 'attr_accessible' for #<Class:0x00007fa50823fc80> (NoMethodError) Did you mean? attr_accessor

inline /Users/ahmedelemam/.rvm/gems/ruby-2.6.3/gems/carrierwave_direct-2.1.0/lib/carrierwave_direct/orm/activerecord.rb:35:in `mount_uploader'

We are using attr_accessible :#{column}_key, :remote_#{column}_net_url