Создал папки

app/main.py

@@ -30,7 +30,7 @@ async def upload_avatar(file: UploadFile):
     resized_image = image.resize(new_size)
 
     image_url = f"static/images/avatars/{name}_avatar.{image.format.lower()}"
-    resized_image.save(image_url, save_all=True)
+    resized_image.save(image_url, save_all=True) if image.format.lower() in {"gif"} else resized_image.save(image_url)
     return {"image_url": image_url}
 
 
@@ -41,5 +41,5 @@ async def upload_image(file: UploadFile):
     image = Image.open(BytesIO(content))
 
     image_url = f"static/images/images/{name}_image.{image.format.lower()}"
-    image.save(image_url, save_all=True)
+    image.save(image_url, save_all=True) if image.format.lower() in {"gif"} else image.save(image_url)
     return {"image_url": image_url}