await asyncio.get_running_loop().run_in_executor(None, jojogan.predict, attachment.url, style)

app.py

@@ -56,7 +56,8 @@ async def discord_before(ctx):
 async def generation(ctx, attachment):
     if attachment:
         style = 'JoJo'
-        im = await asyncio.to_thread(jojogan.predict, attachment.url, style)
+        await asyncio.get_running_loop().run_in_executor(None, jojogan.predict, attachment.url, style)
+        #im = await asyncio.to_thread(jojogan.predict, attachment.url, style)
         #im = jojogan.predict(attachment.url, style)
         await asyncio.gather(
             ctx.send(f'{ctx.author.mention} Here is the jojo version of it'),