MAGETWO-80717: Fix the correct removal of the images and the removal of all images in the catalog #11153

 - Merge Pull Request #11153 from raumatbel/magento2:FR#RemoveImages
 - Merged commits:
   1. 6625945
   2. 39e06b0
   3. 92d8418
   4. 8731d97
   5. 7715950
   6. eba2fbd
   7. 9778bfb
   8. 5039c94

Author: Volodymyr Kublytskyi

app/code/Magento/Catalog/Model/Product/Gallery/UpdateHandler.php

@@ -33,8 +33,10 @@ protected function processDeletedImages($product, array &$images)
             if (!empty($image['removed'])) {
                 if (!empty($image['value_id']) && !isset($picturesInOtherStores[$image['file']])) {
                     $recordsToDelete[] = $image['value_id'];
-                    // only delete physical files if they are not used by any other products
-                    if (!$this->resourceModel->countImageUses($image['file']) > 1) {
+                    $catalogPath = $this->mediaConfig->getBaseMediaPath();
+                    $isFile = $this->mediaDirectory->isFile($catalogPath . $image['file']);
+                    // only delete physical files if they are not used by any other products and if this file exist
+                    if (!($this->resourceModel->countImageUses($image['file']) > 1) && $isFile) {
                         $filesToDelete[] = ltrim($image['file'], '/');
                     }
                 }