Warning: PHP Startup: failed to open stream: No such file or directory in /autoinstalator/wordpress1/wp-content/plugins/pay-by-paynow-pl/pay-by-paynow-pl.php on line 35

Fatal error: PHP Startup: Failed opening required '/autoinstalator/wordpress1/wp-content/plugins/pay-by-paynow-pl/vendor/autoload.php' (include_path='.:/:/usr/local/php72/lib/pear') in /autoinstalator/wordpress1/wp-content/plugins/pay-by-paynow-pl/pay-by-paynow-pl.php on line 35