WPMU DEV Update Notifications plugin update issue

I'm trying to do the auto update for latest version of WPMU DEV Update Notifications plugin but I am getting the following error:

Downloading update from https://premium.wpmudev.org/wdp-un.php?action=download&key=4560cfb5c1d74b0233f63ee4b48a164841a71dbe&pid=119…
Unpacking the update…
Incompatible Archive. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature