It is a sign of the Last Day (Qiyamah) that religious knowledge will be taken away from us. Some people take it literally. Like the words of Quran will vanish and books will have no more words in them. But actually it means something else: the death of religious scholars (and lack of replacements).
Narrated Abu Huraira:
The Prophet said, “(Religious) knowledge will be taken away (by the death of religious scholars) ignorance (in religion) and afflictions will appear; and Harj will increase.” It was asked, “What is Harj, O Allah’s Apostle?” He replied by beckoning with his hand indicating “killing.”
Regarding this Hadith, two reactions are likely. One, accept this misfortune saying that it’s inevitable and nothing can be done about it. Two, DO SOMETHING ABOUT IT! Be the replacement!