Warning: Unsupported declare 'strict_types' in /home/adminsurvey/public_html/vendor/theseer/tokenizer/src/XMLSerializer.php on line 1

Parse error: syntax error, unexpected '?', expecting '&' or variable (T_VARIABLE) in /home/adminsurvey/public_html/vendor/theseer/tokenizer/src/XMLSerializer.php on line 22