Thank you very much for your reply, jerome.poeze.
Please test these steps on one of the NUCs that this error is shown:
1. Download the 0040 BIOS version by clicking here.
2. Complete a BIOS recovery using the following instructions: https://www.intel.com/content/www/us/en/support/articles/000005532/mini-pcs.html
Please share with us the results.