[This](https://github.com/matmut7/contmi/blob/main/packages/client/src/components/views/BalanceView.tsx#L13) is not working for an expense whose author is not in the participants list. For instance: | Only one expense | Participants | Wrong balance | :----:|:-----:|:-----: |  |  |  |
This is not working for an expense whose author is not in the participants list. For instance: