move db setup into start function

nomen/main.py

@@ -60,7 +60,7 @@ class Nomen(Bot):
             intents=options.get("intents"),
         )
 
-        self.db = self.loop.run_until_complete(setup_db(DB_FILE))
+        self.db = None  # Setup in start
         self.prefixes = {}
 
     async def get_guild_prefix(self, guild: Guild):
@@ -84,6 +84,10 @@ class Nomen(Bot):
         )
         self.prefixes[guild.id] = prefix
 
+    async def start(self, *args, **kwargs):
+        self.db = await setup_db(DB_FILE)
+        await super().start(*args, **kwargs)
+
     async def close(self):
         await super().close()
         await self.db.close()