hello. i need some help with this. i am a canadian perminent resident with a uk passport. my pr card is out for renewall and has been for a while. will i still be able to go to cuba and get back in to canada if it dosent get to me in time for the trip. any thoughts will help.

ive been told i can obtain a travel document , but i dont know if i have to get it in cuba or can i get it in seattle and use if for my return flight home from cuba? i cant seem to get hold of anyone at the government to ask so i dont know what to do. thanks