图片显示问题

app/AdminAgent/Renderable/SelectAgentProduct.php

@@ -30,7 +30,7 @@ class SelectAgentProduct extends LazyRenderable
 
 			$grid->column('id');
 			$grid->column('title');
-			$grid->column('picture')->image(60, 60);
+			$grid->column('picture')->image('', 60, 60);
 			$grid->column('sale');
 			$grid->column('stock');
 			$grid->column('updated_at');

app/AdminAgent/Renderable/SelectProduct.php

@@ -30,7 +30,7 @@ class SelectProduct extends LazyRenderable
 			$grid->column('id');
 			$grid->column('supplier.name', '供应商');
 			$grid->column('title');
-			$grid->column('picture')->image(60, 60);
+			$grid->column('picture')->image('',60, 60);
 			$grid->column('sale');
 			$grid->column('stock');
 			$grid->column('updated_at');