Cause
allow_channel_audience requires at least one granted channel.
What to do
Grant a channel or remove the channel audience.
application/problem+json
{
"type": "https://masnet.com/developers/errors/channel_audience_requires_channels",
"title": "Channel audience without channels",
"status": 422,
"detail": "...",
"code": "channel_audience_requires_channels",
"correlation_id": "..."
}