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Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in /home/luxurytr/public_html/lt8/vendor/masterminds/html5/example.php on line 3

Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='.:/opt/alt/php74/usr/share/pear') in /home/luxurytr/public_html/lt8/vendor/masterminds/html5/example.php on line 3