changed tobytes to tostring for backward compatibility
changed tobytes to tostring for backward compatibility

Jamesjue/FaceSwap-server,Jamesjue/FaceSwap-server,cmusatyalab/faceswap,cmusatyalab/faceswap,cmusatyalab/faceswap,cmusatyalab/faceswap,Jamesjue/FaceSwap-server,cmusatyalab/faceswap,Jamesjue/FaceSwap-server