处理product->picture为空

app/AdminAgent/Controllers/OrderController.php

@@ -72,7 +72,7 @@ class OrderController extends AdminController
 
 					$row = [];
 					foreach($item as $v) {
-						$picture = $v->product->picture ? Storage::disk('public')->url($v->product->picture) : '';
+						$picture = !is_null($v->product->picture) ? Storage::disk('public')->url($v->product->picture) : '';
 						$row[] = [
 							$v->product->title ?? '',
 							'<img data-action="preview-img" src="' . $picture . '" style="max-width:120px;max-height:200px;cursor:pointer" class="img img-thumbnail">',