Seen in non-HD login, when selecting an EVM token from the Sell coin menu when neither it nor its parent was yet activated. The same error occurs when selecting a non-active parent EVM coin.
UTXO, Tendermint, ZHTLC are not affected. Issue appears to be due to GUI parsing with the expectation of HD response structure. Ideally SDK would standardise this.
Once the EVM coin / token is active, balance is reported without a problem.