terminate called after throwing an instance of 'YAML::ParserException'

[banyungong1]

root@621c511df0aa951571b070ee:~/tkDNN/build# ./demo csresnext50-panet-spp_fp16.rt ../demo/yolo_test.mp4 y
Loading YAML: csresnext50-panet-spp_fp16.rt
terminate called after throwing an instance of 'YAML::ParserException'
what(): yaml-cpp: error at line 1, column 8: unknown escape character:
Aborted (core dumped)

What's the reason for that?