https://gerrit.wikimedia.org/r/c/mediawiki/libs/Zest/+/734381
https://integration.wikimedia.org/ci/job/composer-package-php81-docker/99/console
23:27:26 src/ZestInst.php:305 PhanCoalescingNeverNullInLoop Using non-null $el->getAttribute('id') of type string as the left hand side of a null coalescing (??) operation. The right hand side may be unnecessary. (in a loop body - this is likely a false positive)
(Not sure how to tag Zest)