Dell Enterprise Storage Analytics for vROPS version 7.1 fails to upgrade

Hi, 

I have recently upgraded my vROPS from version 8.6.2 to version 8.10.2 but I am getting errors when trying to update the Dell ESA Management Pack from version 6.3.1 to version 7.1 (even 7.0 is failing). For some reason the upgrade fails with the following error right after I click upload:

"PAK Manager: PAK file /storage/db/casa/pak/dist_pak_files/cargo/reservedTemp_6613844667015435493.pak is not in zip format"

Any details on how to fix this issue would be appreciated. Thank you in advance