// Send request to proxied service
$status = $req->execute();
+ MediaWiki\HeaderCallback::warnIfHeadersSent();
+
// Simply serve the response from the proxied service as-is
header( 'HTTP/1.1 ' . $req->getStatus() );
function wfThumbError( $status, $msgHtml, $msgText = null, $context = [] ) {
global $wgShowHostnames;
+ MediaWiki\HeaderCallback::warnIfHeadersSent();
+
header( 'Cache-Control: no-cache' );
header( 'Content-Type: text/html; charset=utf-8' );
if ( $status == 400 || $status == 404 || $status == 429 ) {