Documentation viewer in Frescobaldi

[Andrew Bernard]

Frescobaldi 3.2 on Linux (EndeavorOS, and Ubuntu), no matter what URL or 
local file I put in the Lilypond Documentation preferences it does not 
work. If I use a URL at lily[pond.org I get an Apache error. If trying 
to add a local copy the index.html file simply does not appear in the 
browser dialog when I go to the appropriate directory. I am mystified. 
Any clues?

When I install Frescobaldi it does show doc for 2.22 online but nowhere 
do I see this URL in the preferences, so how does it even get there? 
Hardwired? Does not seem right.