flyctl logs in the terminal works.
“Live Logs” works on the dashboard.
“Log Search” in the dashboard just takes me to a white page should “Not found”.
Do i need to install something to have this working?
Generally I like fly.io but little things make me wonder if people are using fly.io for serious projects?
TIA
little things make me wonder if people are using Fly for serious projects?
Well, you’re here; is your project serious? 
Fly took 11M USD of revenue last year, which is small fry for a cloud provider. But they’re growing, with the rough edges one would expect. They’re the plucky David against an Amazonian Goliath.
I’d say that if you find a bug, just report it, with all the detail that a bug report requires. “Log Search” is Grafana, and there’s some murmurs that the offering will change here. I can’t say why you’re getting an error, but it may be worth not relying on included Grafana for the long term.