Error loading static pages NextJs

SyntaxError: Unexpected token A in JSON at position 0```

We have an optional rich text field called "descriptionLong". Whenever this field is empty we get above error in our NextJS builds. As soon as a I add an empty space or some letters into the field it works as expected. What is going on here? Does anyone know?

We cannot really redeploy atm and its incredibly frustrating.

We use:
- Strapi v4.12.4
- EditorJS for Richtexts

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