The URL rotation configuration file rotator-config.json could not be found or has invalid content.
Please create this file in the application directory with the following format:
{
"sites": [
{ "url": "https://example.com", "duration": 30 },
{ "url": "https://another-site.com", "duration": 60 }
]
}
The duration is specified in seconds.
Common JSON errors include: