Jef, you are missing a bunch of folders and files
The hts folder should have the following to run tvheadend:
Access control, bouquet, calclient, channels, codec, dvr, epggrab, input, profile, service mapper, timeshift folders. The files not in folder should be: config, epgdb.v3, .lock and superuser.
I think you do not have the entire db installed. Purge the entire install and build from source.
I read the above post. The post that directed me to the link about the files being moved is full of crap. That update crashed my entire system which led me to the problem 403
Lisa