0 code coverage on 0 new lines

Sonar version: Developer Edition 7.9.6

Hello, I set up Sonarqube for PR analysis and each PR analysis has 0 code coverage on 0 new lines despite the fact that I add new lines and some of them are covered and some of them are not.

Screenshot 2021-08-30 at 11.29.10
image

How to resolve this problem? It seems that I set up sonarqube configuration file properly:

property "sonar.coverage.jacoco.xmlReportPaths", "build/reports/jacoco/testDebugUnitTestCoverage/testDebugUnitTestCoverage.xml"
property "sonar.junit.reportsPath", "build/test-results/testDebugUnitTest/"

PR: I use gradle and Android environment.