The main branch has no lines of code. When sonar-scanner is executed command line on Mac

Hello Geeks,
kindly help me, as I have already invested my 15 days.

Version Info:
SonarQube: 8.2, SonarQube Scanner: 4.2.0.1873, Gradle : 6.3, Java: 11.0.3 (64 bit) Oracle, Database: Postgres, OS: Mac OS X 10.14.4 x86_64

What I am trying to achieve:
I have a code base setup on my local machine.
I need to scan this code and get the report, if any blocker/critical… etc. are there.

What I have done so far:

I have created a project on sonarqube. Downloaded the gradle and Android Studio. Build the project using gradle build. Downloaded sonar-scanner.

My SonarQube server is up and running and it shows Quality Gate as Passed and when I click on Overview, then i got warning as "The main branch has no lines of code."

And when I run sonar-scanner, I get attached scan.txt (22.9 KB) logs

I execute below sonar-scanner command:
**sonar-scanner -X -Dsonar.projectKey=Project_Android -Dsonar.sources=. -Dsonar.host.url=http://localhost:9000/sonarqube **

Kindly let me know, in case any specific file is needed.