Fatal error: Uncaught Error: Interface "ECPrivateKey" not found in /home/wladimir/public_html/whats/src/libaxolotl-php/ecc/DjbECPrivateKey.php:3 Stack trace: #0 {main} thrown in /home/wladimir/public_html/whats/src/libaxolotl-php/ecc/DjbECPrivateKey.php on line 3