Oh… Sorry. i found what was the issue.
I didn’t have stable internet last week and tried to play the editor. so i clicked some options in setup and so on. So what i’ve done is check Custom application in Defold Preferences. Now i unchecked it and everything become works.
regarding Unhandled event loop exception i followed this solution Installed XULRunner and added
-Dorg.eclipse.swt.browser.XULRunnerPath=/Library/Frameworks/XUL.framework
to the Defold.app/Contents/MacOS/Defold.ini file