Prevent knockout by using the Overprint options in the Attributes panel in InDesign.
Overprint Awareness - Cummings Printing
Set a Swatch to Overprint
The dreaded white box: How to identify overprint issues. - Eagle
Use of Overprint
Use of Overprint
Black not knocking out in Adobe InDesign - SteveZ DesignZ
The dreaded white box: How to identify overprint issues. - Eagle Web Press
Overprint issues — Sketchbook B
Setting Artwork to Overprint in InDesign
Overprint Oddness - Any Suggestions? : r/indesign
Overprinting and Knocking out Black and White in InDesign
Solved: Re: QR Code overprint. - Adobe Community - 9706681