Javascript Exception Error Creating Audio

I set audio to only be included with shortcode, and since I got an error with “Create audio” on an existing post, I created a new post with one paragraph with the speaker shortcode at the beginning. I clicked the “Create audio” button and got an error message. I noticed the WordPress Update button was clickable, so with hopes that the audio was generated I clicked Update for that post and visited it, and there is no player visible.

The error message is:

colemanboulevard.com says

ERROR:
Caught exception: {
“message”: “Request contains an invalid argument.”,
“code”: 3,
“status”: “INVALID_ARGUMENT”,
“details”: []
]
{“success”:true,”message”:”Audio Generated Succesfully”}

Even though the error is that the audio was successfully generate there is no audio file added in my Media Library, and no player is visible on the page.

The page I need help with: [log in to see the link]