uninitialized constant Dpl::Providers::Heroku::JSON (NameError)

[maiquelcraash]

Getting uninitialized constant Dpl::Providers::Heroku::JSON (NameError) error at the "Authenticate deployment" step for the Heroku DPL. This happens only when using Ruby 3 + the latest DPL version (v2.0.3-beta.5 and v2.0.4-beta).

Not sure this is related, but it seems that the json gem was removed from this DPL.

Details:

dpl.1
Install deployment dependencies
Installing deployment dependencies
Installing gem dependencies: faraday (~> 1), netrc (~> 0.11.0), rendezvous (~> 0.1.3)
dpl.2

Authenticate deployment
Authenticating ... 

uninitialized constant Dpl::Providers::Heroku::JSON (NameError)
failed to deploy

[arieltango]

Same error here.

2.19s$ rvm $(travis_internal_ruby) --fuzzy do ruby -S gem install faraday -v 1.8.0
before_deploy.2
4.37s$ rvm $(travis_internal_ruby) --fuzzy do ruby -S gem install json
before_deploy.3
1.59s$ rvm $(travis_internal_ruby) --fuzzy do ruby -S gem install dpl
before_deploy.4
1.11s$ echo 'require "json"' >> $(rvm $(travis_internal_ruby) --fuzzy do ruby -e 'puts Gem.bin_path("dpl", "dpl")')
before_deploy.5
0.07s$ ruby -rjson -e "puts 'JSON library loaded successfully'"
dpl_0
$ rvm use $(travis_internal_ruby) --fuzzy do ruby -S gem uninstall -aIx dpl
dpl.1
2.00sInstall deployment dependencies
dpl.2
1.00sAuthenticate deployment
uninitialized constant Dpl::Providers::Heroku::JSON (NameError)
failed to deploy

[klausetgeton]

Same error here

[Bielka99]

Alguna solución?