[24-Jul-2013 06:40:43 UTC] Backtrace from warning 'Memcached::get() expects parameter 2 to be a valid callback, no array or string given' at /wordpress/wp-content/object-cache.php 1250:
/wordpress/wp-admin/post.php 185 calling include()
/wordpress/wp-admin/edit-form-advanced.php 283 calling require_once()
/wordpress/wp-admin/admin-header.php 69 calling do_action()
/wordpress/wp-includes/plugin.php 406 calling call_user_func_array()
<unknown file> <unknown line> calling admin_head()
/wordpress/wp-content/plugins/advanced-custom-fields/core/controllers/input.php 178 calling apply_filters()
/wordpress/wp-includes/plugin.php 173 calling call_user_func_array()
<unknown file> <unknown line> calling get_field_groups()
/wordpress/wp-content/plugins/advanced-custom-fields/core/controllers/field_group.php 62 calling wp_cache_get()
/wordpress/wp-content/object-cache.php 316 calling get()
/wordpress/wp-content/object-cache.php 1250 calling get()
Hi @leonho
Thanks for the error reports. I’m looking at the issue:
/wordpress/wp-content/plugins/advanced-custom-fields/core/controllers/input.php 178 calling apply_filters()
But that line of code reads:
$acf['options'] = apply_filters('acf/field_group/get_options', array(), $acf['id']);
This looks pretty normal to me. Can you spot the issue?
I think the warning is from the line:
/wordpress/wp-content/plugins/advanced-custom-fields/core/controllers/field_group.php 62 calling wp_cache_get()
Hi @leonho
Thanks mate, looking at this line, ACF looks like:
$found = false;
$cache = wp_cache_get( 'field_groups', 'acf', false, $found );
Can you confirm this is what you see? Are you running the latest ACF 4.1.8.1?