can't import image in compositing - belnder 2.79

Is this a bug ? i load blender, go to compositing layout and in node editor, change type to compositing. But when trying to add image by right click/input, i can only select ‘multiple images’ and ‘image sequence’ , all other options are greyed out. So if i import image, nothing happen and sometime got error msg pop out (see attachment).

Anyone got solution ?

Disable Node Wrangler addon and try again?