VSCode not working properly

Got a wierd problame… For some reason VSCode stopped working properly for me and i have no idea why. I tried looking all over the internet for a solution but didnt find anything. I was working on my project and all of the sudden a blue error line appeard
And then when i tried to add unity BUILD IN functions such as OnTriggerEnter i got the auto complete but it didnt add the whole function
I tried working on Visual Studio and everything works fine there only on VSCode it doesnt work