[HELP]Project screen is blank

Whenever i try to open my unity project, after updating to version 5.6.5f1 the project screen turns blank. I can see the menu bar but cannot access anything on it.

I dont know if it would help you but you can try to delete “LastLayout.dwlt” located in

Use Win+R and paste “%appdata%\Unity\Editor-5.x\Preferences\Layouts” to get there easily
This path might be different in this old version.
You could also try to install the newest Version 2017.3.1f1

that happened to me too.
try to open an old project scene but not ın unity go and double clıck to the scene after.