如何修复heroko中的laravel解聚错误？

我试图在heruko中部署一个简单的应用程序，但在执行部署分支时，它返回一个错误

Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1
 !     WARNING: A post-autoload-dump script terminated with an error
 !     ERROR: Dependency installation failed!
 !     
 !     The 'composer install' process failed with an error. The cause
 !     may be the download or installation of packages, or a pre- or
 !     post-install hook (e.g. a 'post-install-cmd' item in 'scripts')
 !     in your 'composer.json'.
 !     
 !     Typical error cases are out-of-date or missing parts of code,
 !     timeouts when making external connections, or memory limits.
 !     
 !     Check the above error output closely to determine the cause of
 !     the problem, ensure the code you're pushing is functioning
 !     properly, and that all local changes are committed correctly.
 !     
 !     For more information on builds for PHP on Heroku, refer to
 !     https://devcenter.heroku.com/articles/php-support
 !     
 !     REMINDER: the following warnings were emitted during the build;
 !     check the details above, as they may be related to this error:
 !     - A post-autoload-dump script terminated with an error
 !     Push rejected, failed to compile PHP app.
 !     Push failed

这可能会有帮助