Same here i think its buggy with latest WordPress.
I have to this problem how I can solve this issue
I suggest you to download instant articles wp 2.10 and use it
Plugin has some issues with some php versions.
There is temporary solution on GitHub:
You should find wizard/templates/wizard-template.php in your plugin folder
Find line 101: <?php if ( ! empty( get_settings_errors() ) ) : ?>
And replace that with this lines:
<?php
$get_settings_errors = get_settings_errors();
if ( ! empty( $get_settings_errors ) ) : ?>
thaks a lot this worked nice.
I’ve tried to disable that line. but I still have issues.
This is the PHP error frm my site error log
[Thu Sep 22 08:21:07 2016] [error] [client 188.40.46.135] PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'sfw_load_pwd' not found or invalid function name in /home/site/mysite/wordpress/wp-includes/plugin.php on line 524
[Thu Sep 22 08:21:07 2016] [error] [client 182.74.243.43] PHP Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookAuthenticationException' with message 'This IP address is not on the Server IP whitelist' in /home/site/mysite/wordpress/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/Exceptions/FacebookResponseException.php:106\nStack trace:\n#0 /home/site/mysite/wordpress/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookResponse.php(210): Facebook\Exceptions\FacebookResponseException::create(Object(Facebook\FacebookResponse))\n#1 /home/site/mysite/wordpress/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookResponse.php(255): Facebook\FacebookResponse->makeException()\n#2 /home/site/mysite/wordpress/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/FacebookResponse.php(82): Facebook\FacebookResponse->decodeBody()\n#3 /home/site/mysite/wordpress/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Faceb in /home/site/mysite/wordpress/wp-content/plugins/fb-instant-articles/vendor/facebook/php-sdk-v4/src/Facebook/Exceptions/FacebookResponseException.php on line 106, referer: https://blogs.mysite.com/wp-admin/edit.php`
[Thu Sep 22 08:21:15 2016] [error] [client 188.40.46.135] PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'sfw_load_pwd' not found or invalid function name in /home/site/mysite/wordpress/wp-includes/plugin.php on line 524`
