Is "Mawlid Ibn Hajar" entirely authentic with a complete chain of narration?

Not everything mentioned in the treatise "Mawlid of Ibn Hajar al-Haytami" is authentic; rather, it contains weak narrations, such as the story of the creation of the Prophet, peace and blessings be upon him. Among its errors is the author's seeking intercession through the Prophet, peace and blessings be upon him, which is not permissible after his death.