This is what my settings look like, make sure you are using the “Universal Render Pipeline/Unlit” shader. 
Gotcha! So you have two options to fix this. If you haven’t done any work on the project in that current project, then my recommendation is to make a new project that uses a template that includes the URP pipeline (I use this one for all my 2d work)
Option two is to convert the current project you have to use URP. I don’t know all the ins and outs of doing this so something might not work but here is what I got from a quick test.
- Import the “Universal RP” package from the package manager window (under Window > Package Manager)
- Once that is installed (if it wasn’t already), make a “Settings” folder in your Assets folder
- Right click in this settings folder and go Create > Rendering > URP Asset (With 2d Rendering)
- Name it whatever you want
- Then assign it in that window.