The Software Update page in the Admin UI displays the status Failed The PAK action "validate" script "source ./pak_python_wrapper.sh validate.py" failed for one or more nodes.
Aria Operations 8.x
The wrong 8.14.x - 8.18.x upgrade PAK file was being uploaded.
Aria Operations 8.10.2 or older versions cannot upgrade directly to 8.18.1. It will have to upgrade to 8.17.2 first.
Download and apply the correct upgrade PAK file on the Software Update page.