@Agold10: The warning is always shown, I think?
Is the actual problem that the extract is empty, and not that you get a warning? If so, please rephrase the task summary. Thanks!

Looks like the same problem as T203744: TextExtracts gives empty extract for many pages to me, hence merging.

The warning is present on all the requests.
The extract is returned for most of the queries
However, the extract is sometimes empty. (The Wikipedia page for these queries does exist.)

My problem is that the extract is empty

I did not notice the problem so far because the extract is displayed on most of my pages.

Now, some new pages of my site don't display the extract. I haven't touched my php code below.

$url='https://'.$lang.'.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&titles='.$q;
$wikiInfo= httpGet($url);
$searchResponse=json_decode($wikiInfo,true);

if(count($searchResponse)==0){
$q=str_replace(" ","_",$q);	

$url='https://'.$lang.'.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&titles='.$q;
$wikiInfo= httpGet($url);
$searchResponse=json_decode($wikiInfo,true);
}

$searchResponse=$searchResponse['query']['pages'];
if (!empty($searchResponse))
{
	foreach($searchResponse as $value){
		$wikiResponse=$value;
	}
}

Thank you.

Thanks. Let's handle this in T203744