Warning: require(/opt/drupal/web/vendor/composer/../symfony/polyfill-php70/bootstrap.php): Failed to open stream: No such file or directory in /opt/drupal/web/vendor/composer/autoload_real.php on line 73

Fatal error: Uncaught Error: Failed opening required '/opt/drupal/web/vendor/composer/../symfony/polyfill-php70/bootstrap.php' (include_path='/opt/drupal/web/vendor/pear/archive_tar:/opt/drupal/web/vendor/pear/console_getopt:/opt/drupal/web/vendor/pear/pear-core-minimal/src:/opt/drupal/web/vendor/pear/pear_exception:.:/usr/local/lib/php') in /opt/drupal/web/vendor/composer/autoload_real.php:73 Stack trace: #0 /opt/drupal/web/vendor/composer/autoload_real.php(63): composerRequire8611dc53a57ec544aa502dc04abc8576('023d27dca8066ef...', '/opt/drupal/web...') #1 /opt/drupal/web/vendor/autoload.php(7): ComposerAutoloaderInit8611dc53a57ec544aa502dc04abc8576::getLoader() #2 /opt/drupal/web/autoload.php(16): require('/opt/drupal/web...') #3 /opt/drupal/web/index.php(14): require_once('/opt/drupal/web...') #4 {main} thrown in /opt/drupal/web/vendor/composer/autoload_real.php on line 73