It's not likely that paper money will completely disappear at any time in the near future. It is true that electronic transactions have become more and more common over the last few decades and there is no reason why this trend will not continue.
Will money ever cease to exist?
Although paper-based currencies are becoming less popular, they will likely stick around for the foreseeable future. Dollars and cents may become harder to use, but as with many obsolete technologies, there are enough users to ensure demand doesn't disappear completely.
Will there be no cash in the future?
From paper to polymer banknotes
We have been issuing banknotes for over 300 years and make sure the banknotes we all use are of high quality. While the future demand for cash is uncertain, it is unlikely that cash will die out any time soon.