Fatal error: Uncaught exception 'Mailgun\Connection\Exceptions\MissingRequiredParameters' with message 'The parameters passed to the API were invalid. Check your inputs! 'to' parameter is not a valid address. please check documentation' in /home/bybuspt/public_html/bybus/vendor/mailgun/mailgun-php/src/Mailgun/Connection/RestClient.php:254 Stack trace: #0 /home/bybuspt/public_html/bybus/vendor/mailgun/mailgun-php/src/Mailgun/Connection/RestClient.php(110): Mailgun\Connection\RestClient->responseHandler(Object(GuzzleHttp\Psr7\Response)) #1 /home/bybuspt/public_html/bybus/vendor/mailgun/mailgun-php/src/Mailgun/Connection/RestClient.php(179): Mailgun\Connection\RestClient->send('POST', 'noreply.bybus.p...', Array, Array) #2 /home/bybuspt/public_html/bybus/vendor/mailgun/mailgun-php/src/Mailgun/Mailgun.php(204): Mailgun\Connection\RestClient->post('noreply.bybus.p...', Array, Array) #3 /home/bybuspt/public_html/bybus/vendor/mailgun/mailgun-php/src/Mailgun/Mailgun.php(135): Mailgun\Mailgun->post('noreply.bybus.p...', Array, Arr in /home/bybuspt/public_html/bybus/vendor/mailgun/mailgun-php/src/Mailgun/Connection/RestClient.php on line 254