Invoking and debugging a contract - Error

[andreax64]

Hi, I'm at point 1 of "Invoking and debugging a contract" in chapter 5 of the second edition of the book. I'm using Ubuntu 20.04 desktop with:
Visual Studio Code
Version: 1.55.0
Commit: c185983a683d14c396952dd432459097bc7f757f
Date: 2021-03-30T16:02:21.560Z
Electron: 11.3.0
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Linux x64 5.8.0-48-generic snap

IBM Blockchain Platform v2.0.2

All works fine so far but when I try to submit a transaction using the requestTrade method I get this error:

ERROR] Error submitting transaction: No valid responses from any peers. Errors:
peer=org1peer-api.127-0-0-1.nip.io:8080, status=500, message=error in simulation: transaction returned with failure: Error: GET_STATE failed: transaction ID: 92e44da6063a8ca291740870303d14a516a5d6cc1f478041f9b19ec8d9bc3d6a: invalid key. Empty string is not supported as a key by couchdb

Any suggestions?
Regards
Andrea

[VRamakrishna]

@andreax64 I just noticed this issue. It seems I never got an email alert. Have you figure out the mistake?

Looking at this error message Empty string is not supported as a key by couchdb and the transaction you are submitting, I can see that the tradeId field is empty, which it should not be as that's the key for any trade record in the ledger database.

@pnovotnyic FYI.