Embedding web client test: 400 error

I’m trying to simulate embedding a voice assistant by pasting the code snippet generated into google chrome console as shown here

However, I’m getting a 400 error.

looks like it’s related to bundle.mjs:30575, bundle.mjs:30560, and bundle.mjs:30654

looks like I’m failing to fetch what is needed from bundle.mjs:30645 . please advise! thanks!