Dear developers of Instant Article:
@trrine @olethomas @bjornjohansen @dekode @automattic @facebook and other respective members.
In my case, my website gives 500 error when i try to publish a post. While, Instant Articles itself working fine on facebook.
Here my error_log
[19-Aug-2016 15:20:09 UTC] PHP Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookSDKException' with message 'Failed to connect to 2a03:2880:11:2f04:face:b00c:0:2: Network is unreachable' in
/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/HttpClients/FacebookCurlHttpClient.php:73
Stack trace:
#0 /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookClient.php(216): Facebook\HttpClients\FacebookCurlHttpClient->send('https://graph.f...', 'GET', '', Array, 60)
#1 /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/Facebook.php(469): Facebook\FacebookClient->sendRequest(Object(Facebook\FacebookRequest))
#2 /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/Facebook.php(342): Facebook\Facebook->sendRequest('GET', '114653542873725...', Array, NULL, NULL, NULL)
#3 /wp-con in /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/HttpClients/FacebookCurlHttpClient.php on line 73
[22-Aug-2016 10:41:47 UTC] PHP Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookSDKException' with message 'You must provide an access token.' in /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookRequest.php:209
Stack trace:
#0 /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookClient.php(201): Facebook\FacebookRequest->validateAccessToken()
#1 /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/Facebook.php(469): Facebook\FacebookClient->sendRequest(Object(Facebook\FacebookRequest))
#2 /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/Facebook.php(342): Facebook\Facebook->sendRequest('GET', '?id=http://payo...', Array, NULL, NULL, NULL)
#3 /wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArti in /wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookRequest.php on line 209