Non SSL on an SSL virtual - how to interpret log?

If there's non-SSL traffic sent to a virtual with a client SSL profile, this will happen. Say a client initially starts with a GET request instead of the client hello to negotiate TLS.

https://support.f5.com/csp/article/K09322055

Here's a good post from rafaelbn on this - Connection Error: ssl_passthru:xxxx: not SSL (40)