Fatal error: Uncaught Error: Interface "OAuth\OAuth1\Signature\SignatureInterface" not found in /home/mboption/public_html/forums/vendor/lusitanian/oauth/src/OAuth/OAuth1/Signature/Signature.php:8 Stack trace: #0 {main} thrown in /home/mboption/public_html/forums/vendor/lusitanian/oauth/src/OAuth/OAuth1/Signature/Signature.php on line 8