Solve an error in Prestashop 8.1.4

Job ID: 37812499

Budget: €8 – €30 EUR

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Hello,

when Prestashop's "new product page" is enabled (screenshot), I cannot access certain product pages as it throws an error. It only happens to a few products.

Screenshots of the error included.

With the "old" product page there is no such issue.

I would require the fix in a written way.

Thank you!
Related categories: PHP eCommerce Prestashop MySQL HTML