Notice of property of non-object and Undefined property al publicar un proyecto

En la plantaforma me salen estas notificaciones:

Trying to get property of non-object in Notice /var/www/html/alimentacionsaludable/httpdocs/wp-content/plugins/edit-author-slug/includes/functions.php on line 651

Y tras publicar una nueva iniciativa me aparece en la plantaforma:

Notice: Trying to get property of non-object in /var/www/html/alimentacionsaludable/httpdocs/wp-content/plugins/edit-author-slug/includes/functions.php on line 651

Notice: Undefined property: stdClass::$ID in /var/www/html/alimentacionsaludable/httpdocs/wp-content/themes/understrap-child-alisal/functions.php on line 235

Notice: Undefined property: stdClass::$ID in /var/www/html/alimentacionsaludable/httpdocs/wp-content/themes/understrap-child-alisal/functions.php on line 237

Notice: Undefined property: stdClass::$ID in /var/www/html/alimentacionsaludable/httpdocs/wp-content/themes/understrap-child-alisal/functions.php on line 227