Hi,
It seems that you are using VMware and has sendfile switched on the nginx server. This is a known issue and we suggest the following:
1. Modify the configuration file of the nginx server and change the sendfile option to OFF.
2. Test the target location of autohds on a locally mounted file system.
If, after doing the above steps and the issue is still encountered, kindly test it against a physical machine and not a virtual machine.
And do let us know if you are still encountering the issue even if using a physical machine.
Cheers,
IC