Fixed #11196

CHANGELOG.md

@@ -17,6 +17,7 @@
 - Fixed a bug where Assets fields’ “Upload files” buttons weren’t wrapping when there wasn’t enough space to show them alongside “Add an asset”. ([#11133](https://github.com/craftcms/cms/issues/11133))
 - Fixed a bug where `Craft.getUrl()` was appending empty query strings to URLs when they weren’t needed. ([#11159](https://github.com/craftcms/cms/issues/11159))
 - Fixed a bug where addresses could validate the wrong set of required fields, if the validation rules were invoked before the country code was set. ([#11162](https://github.com/craftcms/cms/issues/11162))
+- Fixed an error that could occur when rendering the thumbnail preview for an asset, if its file was missing. ([#11196](https://github.com/craftcms/cms/issues/11196))
 
 ## 4.0.1 - 2022-05-06
 

src/services/Assets.php

@@ -609,7 +609,7 @@ public function getThumbUrl(Asset $asset, int $width, ?int $height = null): stri
             'mode' => 'crop',
         ]);
 
-        return $asset->getUrl($transform, false);
+        return $asset->getUrl($transform, false) ?? AssetsHelper::iconUrl($extension);
     }
 
     /**