When I run the user.py inside the example, the following error occurs

[beiji-zz]

nohup: ignoring input

User error: #401 - {"error":{"code":8,"message":"Authentication verification error: actix-web error: credentials have expired"}}

Huid: None

User error: #401 - {"error":{"code":8,"message":"Authentication verification error: actix-web error: credentials have expired"}}
BTC deposit address: None

User error: #401 - {"error":{"code":8,"message":"Authentication verification error: actix-web error: credentials have expired"}}
ETH deposit address: 0xNone

User error: #401 - {"error":{"code":8,"message":"Authentication verification error: actix-web error: credentials have expired"}}
Traceback (most recent call last):
File "/root/sdk/pyHelixMarkets/user.py", line 30, in
asyncio.run(main())
File "/usr/lib/python3.9/asyncio/runners.py", line 44, in run
return loop.run_until_complete(main)
File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
return future.result()
File "/root/sdk/pyHelixMarkets/user.py", line 14, in main
print(f'ICP deposit address (principal id): {user.GetDepositAddress("icp")[0]}')
TypeError: 'NoneType' object is not subscriptable

[beiji-zz]

I solved it, but how is the price of swap calculated?