Hi Ali,
Looking at these posts:
https://ask.opendaylight.org/question/7019/java_home-not-avalid/
This error seems to occur when it can’t find Java. Did you install it? Otherwise, it seems you can fix it by setting the environment variable with the correct java folder.
You can try some of the docker containers out there. This saves quite some time. For example:
https://hub.docker.com/r/glefevre/opendaylight/
Rene