Task 3.10: Fix smartContracts.ethers.test.ts

**Phase:** 3 - Fix Existing Failing Tests (High Priority)

**Tags:** bug-fix, web3

**Description:**
Analyze and fix the failure in `tests/web3/smartContracts.ethers.test.ts` (mock issues).

**Acceptance Criteria:**
- [ ] Analyze the failure in `tests/web3/smartContracts.ethers.test.ts`
- [ ] Fix mock issues
- [ ] Ensure test passes
- [ ] Verify no regressions in other tests