$title = Title::makeTitle( $row->namespace, $row->title );
if ( is_null( $resultPageSet ) ) {
- $data = [ 'value' => $row->value ];
- if ( $qp->usesTimestamps() ) {
- $data['timestamp'] = wfTimestamp( TS_ISO_8601, $row->value );
+ $data = [];
+ if ( isset( $row->value ) ) {
+ $data['value'] = $row->value;
+ if ( $qp->usesTimestamps() ) {
+ $data['timestamp'] = wfTimestamp( TS_ISO_8601, $row->value );
+ }
}
self::addTitleInfo( $data, $title );