Появляется ошибка при попытке написать комментарий.

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails ('empaty Vpost_comment_domam', CONSTRAINT 'post_comment_domain_post_domain_id_post_domain_id' FOREIGN KEY (' post_domain_id') REFERENCES 'post_domain' ( id ) ON DELETE CASCADE),dev