Debian 8 : No LSB modules are available
As the error message says
lsb_release command is installed but
lsb module isn't. Use this command to solve the problem:
apt-get install lsb-core
I suggest to use
lsb_release -a instead of
lsb_release. It shows more useful output.
I just moved to Debian 11, Bullseye and, in order to check the release, you have to type
lsb-core in Bullseye does not exist.