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Your Composer dependencies require a PHP version ">= 7.0.0". You are running 5.6.40-65+ubuntu20.04.1+deb.sury.org+1.

PHP Fatal error:  Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 7.0.0". You are running 5.6.40-65+ubuntu20.04.1+deb.sury.org+1. in /opt/atlassian/bamboo/atlassian-bamboo/xml-data/build-dir/TOR-TORNEDB-DMP56/vendor/composer/platform_check.php on line 25
PHP Stack trace:
PHP   1. {main}() /usr/local/bin/phpunit56:0
PHP   2. PHPUnit_TextUI_Command::main() /usr/local/bin/phpunit56:598
PHP   3. PHPUnit_TextUI_Command->run() phar:///usr/local/bin/phpunit56/phpunit/TextUI/Command.php:116
PHP   4. PHPUnit_TextUI_Command->handleArguments() phar:///usr/local/bin/phpunit56/phpunit/TextUI/Command.php:127
PHP   5. PHPUnit_TextUI_Command->handleBootstrap() phar:///usr/local/bin/phpunit56/phpunit/TextUI/Command.php:739
PHP   6. PHPUnit_Util_Fileloader::checkAndLoad() phar:///usr/local/bin/phpunit56/phpunit/TextUI/Command.php:914
PHP   7. PHPUnit_Util_Fileloader::load() phar:///usr/local/bin/phpunit56/phpunit/Util/Fileloader.php:36
PHP   8. include_once() phar:///usr/local/bin/phpunit56/phpunit/Util/Fileloader.php:52
PHP   9. ComposerAutoloaderInit0071ec6657f387d7bf642d8f0aba5f03::getLoader() /opt/atlassian/bamboo/atlassian-bamboo/xml-data/build-dir/TOR-TORNEDB-DMP56/vendor/autoload.php:7
PHP  10. require() /opt/atlassian/bamboo/atlassian-bamboo/xml-data/build-dir/TOR-TORNEDB-DMP56/vendor/composer/autoload_real.php:25
PHP  11. trigger_error() /opt/atlassian/bamboo/atlassian-bamboo/xml-data/build-dir/TOR-TORNEDB-DMP56/vendor/composer/platform_check.php:25