CiviCRM 6.8.0 upgrade from 6.6.3 has brought this message:
The above SavedSearch entities have invalid php-serialized strings in form_values. This will lead to unexpected search results. This is not something that can be fixed without low level database access.
One of "invalid" values is:
a:8:{i:0;a:5:{i:0;s:8:"entryURL";i:1;s:1:"=";i:2;s:69:"https://domain.tld/wp-admin/admin.php?page=CiviCRM&q=civicrm%2Fcontact%2Fsearch%2Fbuilder&reset=1";i:3;i:0;i:4;i:0;}i:1;a:5:{i:0;s:21:"group_search_selected";i:1;s:1:"=";i:2;s:5:"group";i:3;i:0;i:4;i:0;}i:2;a:5:{i:0;s:14:"tag_types_text";i:1;s:1:"=";i:2;s:19:"Activities or Cases";i:3;i:0;i:4;i:0;}i:3;a:5:{i:0;s:16:"privacy_operator";i:1;s:1:"=";i:2;s:2:"OR";i:3;i:0;i:4;i:0;}i:4;a:5:{i:0;s:14:"privacy_toggle";i:1;s:1:"=";i:2;s:1:"1";i:3;i:0;i:4;i:0;}i:5;a:5:{i:0;s:9:"custom_25";i:1;s:1:"=";i:2;a:1:{s:2:"IN";a:1:{i:0;s:8:"National";}}i:3;i:0;i:4;i:0;}i:6;a:5:{i:0;s:12:"contact_type";i:1;s:2:"IN";i:2;a:1:{s:9:"Household";s:9:"Household";}i:3;i:0;i:4;i:0;}i:7;a:5:{i:0;s:8:"operator";i:1;s:1:"=";i:2;s:3:"AND";i:3;i:0;i:4;i:0;}}
Any pointer to the issue cause(-s) please?