Error handling

src/details_window.py

@@ -251,11 +251,11 @@ class DetailsWindow(Adw.Window):
         except GLib.GError:
             return
 
+        def resize():
+            if cover := resize_cover(path):
+                self.game_cover.new_cover(cover)
                 self.cover_button_delete_revealer.set_reveal_child(True)
                 self.cover_changed = True
-
-        def resize():
-            self.game_cover.new_cover(resize_cover(path))
             self.toggle_loading()
 
         self.toggle_loading()

src/utils/save_cover.py

@@ -22,7 +22,7 @@ from pathlib import Path
 from shutil import copyfile
 
 from gi.repository import Gio
-from PIL import Image, ImageSequence
+from PIL import Image, ImageSequence, UnidentifiedImageError
 
 from src import shared
 
@@ -35,6 +35,7 @@ def resize_cover(cover_path=None, pixbuf=None):
         cover_path = Path(Gio.File.new_tmp("XXXXXX.tiff")[0].get_path())
         pixbuf.savev(str(cover_path), "tiff", ["compression"], ["1"])
 
+    try:
         with Image.open(cover_path) as image:
             if getattr(image, "is_animated", False):
                 frames = tuple(
@@ -61,6 +62,8 @@ def resize_cover(cover_path=None, pixbuf=None):
                     if shared.schema.get_boolean("high-quality-images")
                     else "webp",
                 )
+    except UnidentifiedImageError:
+        return None
 
     return tmp_path