Cannot add or update a child row: a foreign key constraint fails
(db16836_74.wp_grid_container, CONSTRAINTwp_fk_container_typeFOREIGN KEY (type)
REFERENCESwp_grid_container_type(id) ON DELETE CASCADE ON UPDATE CASCADE):
insert into wp_grid_container (id,grid_id,grid_revision,type) values (0,48,0,2)
https://wordpress.org/support/topic/editing-grid-not-possible-anymore/#post-9896304