fix timeout

app/core/models/user/wallet_mixin.py

@@ -31,7 +31,7 @@ class WalletMixin:
                     return response.json()['nft_items']
             except BaseException as e:
                 make_log(self, f"Error while fetching NFTs: {e}", level='error')
-                await asyncio.sleep(2)
+                await asyncio.sleep(6)
                 return await get_nft_items_list()
 
         nfts_list = await get_nft_items_list()