In case it is needed for addressing the issue (and thank you so much!), here is the session when Calbre was installed.
[ds1363]$ wget -nv -O-
https://download.calibre-ebook.com/linux-installer.sh | sh /dev/stdin install_dir=~/bontragercgi.com/calibre isolated=y
2022-08-29 14:14:15 URL:
https://download.calibre-ebook.com/linux-installer.sh [33493/33493] -> "-" [1]
Using python executable: /usr/bin/python3
Installing to /home/willbont/bontragercgi.com/calibre/calibre
Downloading tarball signature securely...
Using previously downloaded calibre-6.3.0-x86_64.txz
Extracting files to /home/willbont/bontragercgi.com/calibre/calibre ...
Extracting application files...
Run "/home/willbont/bontragercgi.com/calibre/calibre/calibre" to start calibre
[ds1363]$