51 bug undefined variable in exception message in converterparserpy

[madvid]

Description

Please provide a detailed description of what was done in this PR. Precise the issue that you are resolving.

Changes include

• [ ] Bugfix (non-breaking change that solves an issue)
• [ ] New feature (non-breaking change that adds functionality)
• [ ] Breaking change (change that is not backwards-compatible and/or changes current functionality)

Breaking changes

Please complete this section if any breaking changes have been made, otherwise delete it.

Checklist

• [ ] I have assigned this PR to myself
• [ ] I have added at least 1 reviewer
• [ ] I have added the needed labels
• [ ] I have linked this PR to an issue
• [ ] I have linked this PR to a milestone
• [ ] I have linked this PR to a project
• [ ] I have tested this code
• [ ] I have added / updated tests (unit / functionals / end-to-end / ...)
• [ ] I have updated the README and other relevant documents (guides...)
• [ ] I have added sufficient documentation both in code, as well as in the READMEs

Additional comments

Please post additional comments in this section if you have them, otherwise delete it.