RANGE_GROUP_NOT_VALID

The RANGE_GROUP_NOT_VALID error occurs when the group value of the Range header in a request is invalid. This header is used to request a specific portion of a resource from the server, and the group value can be used to specify multiple ranges or a set of subranges.

To troubleshoot this error, follow these steps:

1. Validate Range header values: Ensure that the group value in the Range header is a valid format. It should correctly specify the range or subranges you wish to retrieve
2. Correct grouping: Ensure that the group value is correctly formatted and contains valid range specifications
3. Check configuration: If the Range header values are being set automatically by some part of your system, check the configuration to ensure it's being set correctly
4. Debugging: If the error persists, log the Range header values in your server logs to debug and understand what values are being sent in requests