Hi,
I am building the vpn app for macOS by using Packet Tunnel Provider, and the configuration profile is imported via installing. I got the error "Failed to find the primary plugin" once I try to connect the vpn on macOS Sierra. But It works fine on EI Capitan.
I follow this post to check one by one, the error persist even I reinstall Sierra, and even I’ve also specified the providerBundleIdentifier property in NETunnelProviderProtocol object.
Thanks!