The most cathartic moment of my entire life was when I encountered that exact thing in a thread from over a decade ago expecting that to be it and lost all hope, only to find somebody replied calling them out and telling them to share their solution or future googlers were gonna be very upset. They posted their solution and it did, indeed, work.
Don't even remember what the issue was, but the wave of relief was amazing enough that I still remember the feeling to this day.