@pacuk4386 @voala @edward-bernstein Turn on debug log and check what’s the error. Probably you will get something different than:
“PHP Fatal error: Can’t use function return value in write context in /public_html/wp-content/plugins/advanced-custom-fields-pro/includes/local-fields.php on line 304”.
I got the same error as @pshay92 so that is why it worked for her. None of you posted any error messages. Please turn WP_DEBUG_LOG if you don’t have it enabled to see what error you get. Since it’s not a php issue for you, any logs will help resolve the problem. https://codex.wordpress.org/Debugging_in_WordPress#WP_DEBUG_LOG
@voala I’ve tested this on our hosting on 5.6 its working ok with 5.7.11 but crashes on 5.4, so you must have different issue
