How to configure automatic releases on a private repository?

Hello,

I’m trying to use automatic-releases on a private repository. It works fine on public repository but when i change its visibility to private i get an error:

 command-name: laminas:automatic-releases:release -vvv

 env:
 
 GITHUB_TOKEN: ***
 SIGNING_SECRET_KEY: ***
 GIT_AUTHOR_NAME: ***
 GIT_AUTHOR_EMAIL: ***

In IssueClient.php line 57:

 [RuntimeException]

 API call to GitHub failed with status code 422 and message "Validation Fail
 ed"

Exception trace:
 at /app/vendor/jwage/changelog-generator/src/ChangelogGenerator/IssueClient.php:57
 ChangelogGenerator\IssueClient->execute() at /app/vendor/jwage/changelog-generator/src/ChangelogGenerator/IssueFetcher.php:33
 ChangelogGenerator\IssueFetcher->fetchMilestoneIssues() at /app/vendor/jwage/changelog-generator/src/ChangelogGenerator/IssueRepository.php:26
 ChangelogGenerator\IssueRepository->getMilestoneIssues() at /app/vendor/jwage/changelog-generator/src/ChangelogGenerator/ChangelogGenerator.php:36
 ChangelogGenerator\ChangelogGenerator->generate() at /app/src/Github/JwageGenerateChangelog.php:54
 Laminas\AutomaticReleases\Github\JwageGenerateChangelog->__invoke() at /app/src/Github/CreateReleaseTextThroughChangelog.php:55
 Laminas\AutomaticReleases\Github\CreateReleaseTextThroughChangelog->__invoke() at /app/src/Github/MergeMultipleReleaseNotes.php:37
 Laminas\AutomaticReleases\Github\MergeMultipleReleaseNotes::Laminas\AutomaticReleases\Github\{closure}() at n/a:n/a
 array_map() at /app/src/Github/MergeMultipleReleaseNotes.php:41
 Laminas\AutomaticReleases\Github\MergeMultipleReleaseNotes->__invoke() at /app/src/Application/Command/ReleaseCommand.php:88
 Laminas\AutomaticReleases\Application\Command\ReleaseCommand->execute() at /app/vendor/symfony/console/Command/Command.php:255
 Symfony\Component\Console\Command\Command->run() at /app/vendor/symfony/console/Application.php:1000
 Symfony\Component\Console\Application->doRunCommand() at /app/vendor/symfony/console/Application.php:271
 Symfony\Component\Console\Application->doRun() at /app/vendor/symfony/console/Application.php:147
 Symfony\Component\Console\Application->run() at /app/bin/console.php:168
 Laminas\AutomaticReleases\WebApplication\{closure}() at /app/bin/console.php:169

An ORGANIZATION_ADMIN_TOKEN with full repo scopes is used as GITHUB_TOKEN :