I have a project containing all material ui demos, since autocomplete does not exist, i tried to rely on downshift (https://github.com/trepidacious/scalajs-react-downshift) to create one, in compilation i have no errors, but when i run the app , i got the error below, someone can help ?

I have a project containing all material ui demos, since autocomplete does not exist, i tried to rely on downshift (https://github.com/trepidacious/scalajs-react-downshift) to create one, in compilation i have no errors, but when i run the app , i got the error below, someone can help ?