Cause
The token_url of the destination authentication does not meet the URL rules or has a query string.
What to do
Use a public HTTPS URL without a query string.
application/problem+json
{
"type": "https://masnet.com/developers/errors/invalid_token_url",
"title": "Invalid token URL",
"status": 400,
"detail": "...",
"code": "invalid_token_url",
"correlation_id": "..."
}