Warning: Unsupported declare 'strict_types' in /home/coinkyrm/public_html/huawei-lte-api-php-master/src/ResponseInterface.php on line 3

Parse error: syntax error, unexpected ':', expecting ';' or '{' in /home/coinkyrm/public_html/huawei-lte-api-php-master/src/ResponseInterface.php on line 13