Read-only file system while setting flags on

This error occurs when you are trying to modify a file on a read-only file system. This means that the file system has been mounted with a read-only option, which prevents any changes from being made to the files stored on it.

To resolve this error, you need to remount the file system with write access. You can do this by using the following command:

mount -o remount,rw /path/to/file/system

Replace "/path/to/file/system" with the actual path to the read-only file system that you want to modify.

After remounting the file system with write access, you should be able to set the flags on the file without encountering the "read-only file system" error.