Well, I thought that I had found the problem, my issue turned out that my data logger memory was failing and that was the reason I wasn't getting an index.html file created, since there was no data to be posted. I went back to the 3.9 train to figure out what was really happening, only to find that the data logger was causing the issue. I have a new one on order so after that gets installed and 3.9 is working correctly, I'll do the upgrade again.