Puppet currently relies on a test forge instance, but that is no longer supported. The following beaker tests rely on the test forge:
$ git grep stub_forge
acceptance/tests/environment/environment_scenario-bad.rb: stub_forge_on(master)
acceptance/tests/modules/changes/invalid_module_install_path.rb:stub_forge_on(master)
acceptance/tests/modules/changes/missing_checksums_json.rb:stub_forge_on(master)
acceptance/tests/modules/changes/missing_metadata_json.rb:stub_forge_on(master)
acceptance/tests/modules/changes/module_with_modified_file.rb:stub_forge_on(master)
acceptance/tests/modules/changes/module_with_removed_file.rb:stub_forge_on(master)
acceptance/tests/modules/changes/unmodified_module.rb:stub_forge_on(master)
acceptance/tests/modules/list/with_environment.rb:stub_forge_on(master)
Convert these tests to rspec integration tests (see https://github.com/puppetlabs/puppet/blob/main/spec/integration/application/module_spec.rb) using the bacula test fixture instead of pmtacceptance-nginx.