Solved
The Sims 4 Solar Flare Lounge Issue
I played the Sims 4 for a few days and gameplay was fine. All of the sudden I start the game and notice an orange, upside-down, triangle above the Solar Flare lounge. I can still open the lounge an...
This happened to me too!
Apparently this symbol appears when a community lot is incomplete (seems like the community lots need a minimum of interior, didn't knew this either).
In my case it was a missing musical instrument.
My theory is that one of the sims who visited the lot played the instrument and accidently? took it home which made the lot incomplete.
After I bought a guitar and placed it the symbol disappeared and everything went back to normal.
Hope it works for you too!
