And that's why Sola Scriptura is such an essential doctrine.
Nope. Sola Scriptura is un-Biblical.
Given that the Bible didn’t exist in its canonical form until centuries after the death of Christ (and even then, most Protestant Bibles nowadays lack certain books that were present throughout Christendom for over a milennium), how would Sola Scriptura work out logistically amongst the illiterate and those whose only access to the Word of God was through the teaching of others?