Fatal error: Uncaught RuntimeException: Signature header not found in /usr/local/www/bot.hosil.tj/viber/vendor/bogdaan/viber-bot-php/src/Bot.php:162 Stack trace: #0 /usr/local/www/bot.hosil.tj/viber/bot.php(369): Viber\Bot->getSignHeaderValue() #1 {main} thrown in /usr/local/www/bot.hosil.tj/viber/vendor/bogdaan/viber-bot-php/src/Bot.php on line 162