FIX silent error on Convert error, fixes #656

[xini]

Description

Manual testing steps

Issues

Pull request checklist

• The target branch is correct
  • See picking the right version
• All commits are relevant to the purpose of the PR (e.g. no debug statements, unrelated refactoring, or arbitrary linting)
  • Small amounts of additional linting are usually okay, but if it makes it hard to concentrate on the relevant changes, ask for the unrelated changes to be reverted, and submitted as a separate PR.
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• This change is covered with tests (or tests aren't necessary for this change)
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• CI is green

[GuySartorelli]

There's no description, no testing steps, and no linked issue, and you haven't ticked several of the checkboxes.
You've submitted enough PRs to know how to fill in the template with all the requested information, and to know that if you can't tick the boxes that either means there's something wrong with what you're submitting or you have questions that you need to ask so you can be confident ticking them.

Please fill in the template in full.

[GuySartorelli]

In any case I think this is not a suitable solution, assuming this is for #656

I'm going to close this for now, as the issue requires more discussion before we can identify if it's even something we want to change.

[xini]

I haven't ticked all the boxes because it is not clear to me whether this needs test coverage and whether it needs to be covered by the docs. I left them open because I feel like that's not my decision.

The title says "fixes #656"