Hope you are doing well and sorry for the trouble. As described, the PDF does not render the page, show the warning "There was an error processing a page. Out of memory"
Is this a behavior with a particular PDF file or with all the PDFs? Please try with a different PDF file and check.
Have you created this PDF file or have you got it from a different user?
What is the version of the Adobe Acrobat/Reader DC you are using? TO check the version go to Help > About Acrobat and make sure you have the latest version 21.05.20048 installed. Go to Help > Check for Updates and reboot the computer once and check.