Heroku bash无法找到php命令

I wanted to publish Laravel App on Heroku today but Heroku bash couldn't find php command.

I update database details in config/database.php and next want to run migration but when i go to heroku run bash and php artisan migrate --app myappname I only see bash: php: command not found

I'm on Windows10.

Problem solved. In composer.json i had ~7.1.3 version of PHP, after change to "php": "~7.3.0" and git push heroku master it start work