Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\revdev\includes\phpmailer\vendor\guzzlehttp\psr7\src\InflateStream.php on line 3

Fatal error: Interface 'Psr\Http\Message\StreamInterface' not found in C:\Apache24\htdocs\revdev\includes\phpmailer\vendor\guzzlehttp\psr7\src\InflateStream.php on line 21