When I enter the sudo bash ./install.sh

command to upgrade from

Omada_SDN_Controller_v5.15.8.2 to

Omada_SDN_Controller_v5.15.20.18,

the following message is displayed:

java17-runtime or java17-runtime-headless dependency not satisfied.

How can I solve the above problem and upgrade to the latest version?

Please explain it easily for beginners.

My environment is as follows.

Ubuntu 20.04

java -version

openjdk version "1.8.0_442"

OpenJDK Runtime Environment (build 1.8.0_442-8u442-b06~us1-0ubuntu1~20.04-b06)

OpenJDK 64-Bit Server VM (build 25.442-b06, mixed mode)