I seem to experience some WPML-related issue, my site is bilingual - NL and FR.
NL is the default language and there are no errors/warnings, but as soon as I start using FR version, plugin Query Monitor reports php's warning:
array_walk() expects parameter 1 to be array, null given
wp-content/plugins/http2-server-push/http2-server-push.php:70
I seem to experience some WPML-related issue, my site is bilingual - NL and FR. NL is the default language and there are no errors/warnings, but as soon as I start using FR version, plugin
Query Monitor
reports php's warning: