added with open for f

app.py

@@ -103,10 +103,12 @@ async def deepfloydif(ctx, *, prompt: str):
 
         #3
         # Create a public thread based on the sent message
+        # could replace sent_message with initial user command message? try later
         thread = await sent_message.create_thread(name='Image Upscaling Thread')
 
         #4
-        threadmsg = await thread.send('Here is the combined image. React with the image number you want to upscale!', file=discord.File(f, 'combined_image.png'))    
+        with open(combined_image, 'rb') as f:
+            threadmsg = await thread.send('Here is the combined image. React with the image number you want to upscale!', file=discord.File(f, 'combined_image.png'))          
             
         # bot reacts with appropriate emojis to the post, both showing the user what options they have,
         # as well as showing which post to react to.