Warning: Unsupported declare 'strict_types' in /var/www/devel/md/product-db/vendor/spomky-labs/pki-framework/src/X509/CertificationPath/PathValidation/ValidatorState.php on line 3

Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /var/www/devel/md/product-db/vendor/spomky-labs/pki-framework/src/X509/CertificationPath/PathValidation/ValidatorState.php on line 28