LINE 274 of vendor/log1x/acf-composer/src/Block.php …
Changed ‘parent’ => $this->parent ?: null,
to
‘parent’ => $this->parent ?: [],
and everything works again.
Not ideal of course to go editing vendor files but I don’t know how to patch them “correctly”
Presume some script can be created in composer file to apply such a patch?
If anyone can advise, I’d appreciate it
