I restarted the server by stopping it, checked if any process is running and then started it again. It showed that it is started but the server is not up. I checked the logs and it shows the following error:
GET / HTTP/1.1] org.apache.sling.engine.impl.SlingHttpContext handleSecurity: AuthenticationSupport service missing. Cannot authenticate request.
org.apache.sling.engine.impl.SlingHttpContext handleSecurity: Possible reason is missing Repository service. Check AuthenticationSupport dependencies.
I checked the memory usage and it is fine(47% used)
Does anybody have an idea why this error is coming and why the server is not up?