Hi,
416 is error code for range request. It’s returned in case when range request sent for icecast. Icecast dynamically generated and cannot be accessed by range. Valid client should start normal http session after that. There is nothing to fix here. If you see playback isssues - please start support ticket via contact form and provide all details like: server name in the panel and how to reproduce this problem. 416 in logs is not a problem but just an indication than Nimble doesn’t support range requests for icecast. And it should not by design