Allow android chrome to load unsafe scripts
I just now encountered this problem. On my PC there was a warning "sheild" at the right side of the address bar, and I was able to click it and choose the option of load unsafe scripts.  On my Android tablet no such shield was present.  Just trying things, I clicked the address line, and it showed the URL along with a short menu of three choices, among them a pencil icon for editing. I chose that, then removed the "s" from the "https" in the URL, and that worked.