CS0246 error "StandaloneInputModule" could not be found

Hi! I have a wierd problem with Unity UI under 2020.1.16f.
When I open the project, it gives me this CS0246 error “StandaloneInputModule” could not be found.
Then I go to check this file, and it becomes like a blank file in the unity editor:
6616285--753436--upload_2020-12-13_13-53-19.png
Which is different from the normal looking as follows:
6616285--753439--upload_2020-12-13_13-54-22.png

Many thanks for some hints…

1 Like

I simply right-clicked on it and reimported it, and that did the trick.