Unable to open build

Check version

• I'm running the latest version of Path of Building and I've verified this by checking the changelog

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• I've checked for duplicate issues by using the search function of the issue tracker

Check for support

• I've checked that the behaviour is supposed to be supported. If it isn't please open a feature request instead (Red text is a feature request).

What is the behaviour ingame?

No In-Game abnormalities

What is the behaviour in Path of Building?

Opening the build the error message as seen in the image pops up. This only happens with this specific build, the other builds I opened do not exhibit this behavior. I have attempted re-installing path of building, yet the error still persists. I have also attached a zip file containing the build.
Self-Cast Crit.zip

How to reproduce the issue

Not having a gem level (deleting the level and causing it to be blank)

Character build code

Unable to provide character build code

Screenshots

Empieza abriendo el build adjunto Self-Cast Crit.zip y reproduce el fallo después de dejar vacío el nivel de la gema; luego compáralo con builds que se abren correctamente. El problema estará resuelto cuando un build con el nivel de la gema vacío se abra sin el error indicado.