backup/backup.py

@@ -61,8 +61,9 @@ class Backup(commands.Cog):
     async def backup_import(self, ctx: commands.Context, json: str = None):
         """Import your installed repositories and cogs from an export."""
         if json is None:
-            json = await ctx.message.attachments[0].read()
-            if json is None:
+            if ctx.message.attachments is not None:
+                json = await ctx.message.attachments[0].read()
+            else:
                 await ctx.send(error("Please provide a valid JSON export."))
                 return