Display error when there is something wrong

[leomayleomay]

Closes

https://github.com/ArdanaLabs/dUSD/issues/385

other changes

• [ ] The impure tests via nix run .#offchain:test were run and all are passing.
• [ ] Where applicable, grammar, punctuation, and spelling within code and comments should be plausibly correct.
• [ ] The issue(s) that the work is addressing should be linked in the PR description.
• [ ] Any significant changes beyond what's clear from the linked issue(s) are documented in the PR description

[leomayleomay]

Assuming it passes CI after merging master in LGTM

@Geometer1729 yes, the CI has passed :)