error from push

remote: -----> Installing dependencies...
remote:        Composer version 1.9.0 2019-08-02 20:55:32
remote:        Loading composer repositories with package information
remote:        Installing dependencies from lock file
remote:        Package operations: 2 installs, 0 updates, 0 removals
remote:          - Installing setasign/setapdf-core (2.32.0.1371): Downloading (75%)
remote:                                                                                                                                    
remote:          [Composer\Downloader\TransportException]                                                                                  
remote:          The 'https://www.setasign.com/downloads/2298773/SetaPDF-Core_2.32.0.1371-without-demos.zip' URL required authentication.  
remote:          You must be using the interactive console to authenticate                                                                 
remote:                                                                                                                                    
remote:        
remote:        install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [--] [<packages>]...
remote:        
remote: 
remote:  !     ERROR: Dependency installation failed!
remote:  !     
remote:  !     The 'composer install' process failed with an error. The cause
remote:  !     may be the download or installation of packages, or a pre- or
remote:  !     post-install hook (e.g. a 'post-install-cmd' item in 'scripts')
remote:  !     in your 'composer.json'.
remote:  !     
remote:  !     Typical error cases are out-of-date or missing parts of code,
remote:  !     timeouts when making external connections, or memory limits.
remote:  !     
remote:  !     Check the above error output closely to determine the cause of
remote:  !     the problem, ensure the code you're pushing is functioning
remote:  !     properly, and that all local changes are committed correctly.
remote:  !     
remote:  !     For more information on builds for PHP on Heroku, refer to
remote:  !     https://devcenter.heroku.com/articles/php-support
remote: 
remote:  !     Push rejected, failed to compile PHP app.
remote: 
remote:  !     Push failed
remote: Verifying deploy...
remote: 
remote: !	Push rejected to lmi-pdf-service.
remote: 
To https://git.heroku.com/lmi-pdf-service.git