Except nowhere does the Bible say that it is the sole authority. Indeed, Acts 15 shows that the Church can teach with the authority of the Holy Spirit. Thus the Bible itself refutes sola Scriptura.
Nor can reliance on sola Scriptura resolves the disputes about what the Bible means. We need go no further than "This is my Body." A whole litany could be made out of Bible verses where Catholics and Protestants disagree, not on the authority of the Bible, but on the meaning of the passage. If Protestants truly believed in sola Scriptura, then they would recognize that they have no grounds for insisting that Catholics take a Protestant reading of these passages rather than adhering to there own Catholic understanding of them.
Nor can reliance on sola Scriptura resolves the disputes about what the Bible means. We need go no further than "This is my Body." A whole litany could be made out of Bible verses where Catholics and Protestants disagree, not on the authority of the Bible, but on the meaning of the passage.
IF, read in context, and that is usually where the problems arise is scripture is read out of context, the passages on the Lord's Supper are clear as to their meaning.