I’m still getting the same error on version 0.3.2.
I think it is happening on the first time each AMP-produced page is opened. So, if you reload, or return, the error is gone.
<b>Warning</b>: fopen(/wp-content/uploads/2016/01/2.1_resolutionreboot.jpg): failed to open stream: No such file or directory in <b>/nas/content/staging/growmagazine/wp-content/plugins/amp/includes/lib/class-fastimage.php</b> on line <b>31</b><br />
I looked right past my own answer. I was so focused on the post itself that I looked right past the id that was being passed in on the ‘apple_news_do_fetch_exporter’ action.
This simple add to functions.php handled my problem right off in case anyone else needs to handle the same issue:
function grow_store_current_post($post_id){
global $post;
$post= get_post($post_id);
}
add_action('apple_news_do_fetch_exporter', 'grow_store_current_post');