Warning: require(/var/www/html/wp-content/plugins/flexible-shipping/vendor/composer/autoload_static.php): Failed to open stream: No such file or directory in /var/www/html/wp-content/plugins/flexible-shipping/vendor/composer/autoload_real.php on line 29

Fatal error: Uncaught Error: Failed opening required '/var/www/html/wp-content/plugins/flexible-shipping/vendor/composer/autoload_static.php' (include_path='.:/usr/local/lib/php') in /var/www/html/wp-content/plugins/flexible-shipping/vendor/composer/autoload_real.php:29
Stack trace:
#0 /var/www/html/wp-content/plugins/flexible-shipping/vendor/autoload.php(25): ComposerAutoloaderInit06e2003f9eda49cf0524198a92a2cb0f::getLoader()
#1 /var/www/html/wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wp-plugin-flow-common/src/plugin-init-php52-free.php(20): require_once('/var/www/html/w...')
#2 /var/www/html/wp-content/plugins/flexible-shipping/flexible-shipping.php(89): require('/var/www/html/w...')
#3 /var/www/html/wp-settings.php(545): include_once('/var/www/html/w...')
#4 /var/www/html/wp-config.php(122): require_once('/var/www/html/w...')
#5 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#6 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#7 /var/www/html/index.php(17): require('/var/www/html/w...')
#8 {main}
  thrown in /var/www/html/wp-content/plugins/flexible-shipping/vendor/composer/autoload_real.php on line 29