fix(youtubedownloader): awaited a corotuine

youtubedownloader/youtubedownloader.py

@@ -58,7 +58,7 @@ class YouTubeDownloader(commands.Cog):
 
         - The `subfolder` argument only does anything if `delete` is set to False, but it allows you to save to a subfolder in the data path you've set previously without having to change said data path manually."""
         try:
-            self.blacklist_checker(ctx.author.id)
+            await self.blacklist_checker(ctx.author.id)
         except self.UserBlacklisted:
             await ctx.send("You are blacklisted from running this command!")
             return