Hi there Yoast support,
I encounter exactly the same problem (as Habib) and can not figure out how to resolve this problem. Thus far always worked seamless and have not installed any new plug-ins recently. Am puzzled how this occurred.
I am using WordPress v4.9.7, with Travelify theme and Yoast v7.9. All updated.
ps. I did not really understand your reply to Habib in regards to default 2017 theme, so have not checked anything there…
