I need a helper with this issue please support me

help me my macbook pro won't turn off what shall i do maybe above 1 week I didn't turn off it. All the programs work with me but only safari doesn't work also i can't close it if I started to shutdown it some small box told me error in the application please close safari etc

Seriously I wants your support to help me fix this issue thank you for listening me and give me a.Chance