Does "Hisn Al-Muslim" contain weak hadiths?

The book "Fortress of the Muslim" is a concise, comprehensive, and beneficial compilation of dhikr (remembrances of God). Most of what is contained therein is authenticated, but it is not devoid of weak or disputed hadiths, such as the omission of "Indeed, You do not break the promise" in the adhan supplication, some of the morning and evening du'as, and the du'a for seeing a newborn. The author strove to rely on authentic hadiths, and most of these hadiths have been authenticated by some scholars. Disagreement in such matters of ijtihad (independent reasoning) is permissible.