Error: AUTH_101 in Running com.ex.demo.SpotApiClientTest

[devProjectPAI]

I tried the demo of SpotApiClientTest.
Only test two functions: getBalance and getBalances.
They all failed with AUTH_101 as below:
[INFO] Running com.ex.demo.SpotApiClientTest
origion===validate-algorithms=HmacSHA256&validate-appkey=e09dbe4e-0557-4d05-8bf7-00fec4086768&validate-recvwindow=6000&validate-timestamp=1748506271562#GET#/v1/spot/balances#filterIsDisplayFalse=false
result:CommonResponse(code=500, msg=AUTH_101, msgInfo=[], data=null)
origion===validate-algorithms=HmacSHA256&validate-appkey=e09dbe4e-0557-4d05-8bf7-00fec4086768&validate-recvwindow=6000&validate-timestamp=1748506272046#GET#/v1/spot/balance#currency=USDT
result:CommonResponse(code=500, msg=AUTH_101, msgInfo=[], data=null)
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.195 s -- in com.ex.demo.SpotApiClientTest

I have confirmed that the api pubkey and secret key are set all right.

Questions:

1. Why the document uses the name "appkey" , the website's api settings menu uses the name "pubkey" ? That is confused! Are they same or not?
2. In the demo code, HttpUtil.java and AbstractOkHttpInterceptor.java both have api key settings config. Which one is used?
   I take some time to read the code, AbstractOkHttpInterceptor.java should be used. Just want to be confirmed...

[devProjectPAI]

There is a parameter "API_URL" in SpotApiClientImpl.java ...
Changed it then works.

Hope the document and project's readme can be fixed for this.