Chain-bridge issue

[firebeegit]

Hi team !! please take a look on this and help me out....

I tried to add Chain bridge, ERC721, and an example to our existing relay chain, but I got an error. Please let me know how to add Chain bridge, ERC721, and an example. I have also attached a screenshot to this post. Thanks in advance.
followed links -
chain bridge - https://chainbridge.chainsafe.io/local/#start-local-chain