Error on

Hello, I tried to follow the example Interledger with Ethereum and XRP On-Ledger Settlement in and configure a three node network. The only difference between my configuration and the tutorial is that I changed XRP ledger of Bob and Charlie to a different Ethereum testnet due to my requirement. The logs say that every payment packet return a T04 error.
I also open a GitHub issue about this problem. Could you please help me about it?
And I don’t know if this helps, I got the same result when I was trying Interledger.js several days ago (also a three-nodes network like the example).
It never happens when there are only two nodes (i.e. this example)