Opening file failed... the operation completed succesfully?

I get that error every time I try to create a new project or open an old one. It appeared just recently, a few days after I updated the unity.

It doesn’t cause any problems, the projects start just fine, but I have to click through a lot of those before the project opens and it’s extremely annoying.

Here’s the error itself: 85612-opening-file-failed.png

Okay. I think I’ve figured the problem out myself. I’ve recently changed my cache folder location. And the error didn’t appear until after several days so I didn’t suspect it. But I changed the location to default one and the error disappeared.

You can change your cache folder, just copy default cache in new cache folder
PS: sorry for my bad english