Solved by Henry_Chibueze in post #9 
              
              
                Could it be possible then that the torch.hub.load_state_dict( ) is using the new serialization mode to load the model state? 
If what I’m thinking is the case u might want to upgrade to v1.6 
The error is obviously a serialization error b4 u update to v1.6 try setting the serialization to true in th…