I’m having an issue on my local WP development site where if I go into any of the custom field groups on the back end containing a repeater field I cannot add any more fields (of any kind).
If I go into the page template the custom fields are relating too the fields are still there but I can’t add anything to them.
All the content has also vanished from the front-end.
Has anyone encountered this issue/bug before?
EDIT: On switching on the error logs this message is being displayed in place of the content
Warning: Invalid argument supplied for foreach() in /Applications/MAMP/htdocs/sitename/wp-content/plugins/acf-repeater/repeater.php on line 894
and in the admin section
Fatal error:  operator not supported for strings in /Applications/MAMP/htdocs/sitename/wp-content/plugins/acf-repeater/repeater.php on line 418
EDIT 2: Turns out that is was the plugin that caused the issues, I’ve had to delete all the custom fields and put them all back in but it seems to be okay now.