log if thumbnailing of image fails

Author: jrief

finder/contrib/image/models.py

@@ -1,3 +1,4 @@
+from logging import getLogger
 from pathlib import Path
 
 from django.conf import settings
@@ -8,6 +9,8 @@
 from finder.models.file import AbstractFileModel
 
 
+logger = getLogger(__name__)
+
 GravityChoices = {
     '': "Center",
     'n': "North",
@@ -44,8 +47,8 @@ def get_thumbnail_url(self, realm):
         if not realm.sample_storage.exists(thumbnail_path):
             try:
                 self.crop(realm, thumbnail_path, self.thumbnail_size, self.thumbnail_size)
-            except Exception:
-                # no thumbnail image could not be created
+            except Exception as exception:
+                logger.warning(f"Thumbnail generation failed for image {self.pk}: {exception}")
                 return self.fallback_thumbnail_url
         return realm.sample_storage.url(thumbnail_path)