I thought if this is only specific to ABMaterial Gurus then I am not eligible to comment.
However, I just want to share that I am having a similar issue just now.
A not secure error shows up on my Google Chrome address bar due to wrong date calculation.
It shows the SSL cert has already expired yesterday but when I try to run dry-run showing the cert is not yet expired, which is October 2025.
I tried with other browsers like Edge and Firefox but both don't show an error.
So I think this is an issue with the web browser.