Fatal error: Uncaught Error: Interface 'Psr\Http\Message\StreamInterface' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\vendor\guzzlehttp\psr7\tests\StreamDecoratorTraitTest.php:8 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\vendor\guzzlehttp\psr7\tests\StreamDecoratorTraitTest.php on line 8