SonarQube shows 0 coverage and - for unit tests


I am using sonarqube- and sonar-scanner- on windows 11 and testing python projects. It shows vulnerabilities and bugs , but shows 0 coverage and - unit tests. I tired to follow similar questions solutions but it didn’t work for me.
Can you please help me fix this problem? Also Can I use the output of the analysis even if the coverage is zero? what does coverage really means in such cases?