Paint Layer is Transparent and Cannot paint on it

Hello, I was using Krita just fine to create some pieces the last couple days, but when I opened it this morning, and chose to create a new one, the paint layer wasn’t working, and I noticed the thumbnail is transparent. I believe this is a new occurrence, but I don’t know how to adjust it. Thanks in advance for help!

Check the opacity slider on the layer. It should be 100%.