Q: i have a problem when i launch safari

Check out > If Safari doesn't load a page or webpage items are missing - Apple Support

Please quit the application. Force quit if necessary.

Relaunch it by holding down the shift key and clicking its icon. That action will prevent the last window state from being reloaded.

From the menu bar, select

          Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data

to get rid of any cookies or other data left by the server. Open your Downloads folder and delete anything you don't recognize.