Pipeline failed if scanning scala files - scala

Question

I created Gitlab CI which sends all files in project folder to scan in SonarQube, and it's working perfect with python files, but if I add scala files it's failed. My Gitlab CI:
image: testimage
variables:
SONARQUBE_URL: https://sonarqube.com
stages:
- PyLint
pylint:
stage: PyLint
rules:
- if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
script:
- apt-get install scala -y
- cd project
- scalac *.scala
- ls
- cd ..
- sed -i 's/PROJECT-NAME/'"$CI_PROJECT_NAME"'/g' sonar-project.properties
- sonar-scanner -Dsonar.login=$SONAR_TOKEN -Dsonar.qualitygate.wait=true -Dsonar.projectVersion=${CI_PIPELINE_ID}
- echo 'Repository Link:' "$SONARQUBE_URL${CI_PROJECT_NAME}"
Some lines from logs:
INFO: ------------------------------------------------------------------------
INFO: EXECUTION FAILURE
INFO: ------------------------------------------------------------------------
INFO: Total time: 13.545s
INFO: Final Memory: 16M/136M
INFO: ------------------------------------------------------------------------
ERROR: Error during SonarQube Scanner execution
java.lang.IllegalStateException: Can not execute Findbugs
at org.sonarsource.scanner.cli.Main.main(Main.java:61)
Caused by: java.lang.IllegalStateException: One (sub)project contains Java source files that are not compiled (/builds/scala/myrepo).
Property sonar.java.binaries was not set, it is required to locate the compiled .class files. For instance set the property to: sonar.java.binaries=target/classes
Sonar JavaResourceLocator.classpath was empty
Sonar JavaResourceLocator.classFilesToAnalyze was empty
at org.sonar.plugins.findbugs.FindbugsConfiguration.buildMissingCompiledCodeException(FindbugsConfiguration.java:154)
at org.sonar.plugins.findbugs.FindbugsConfiguration.initializeFindbugsProject(FindbugsConfiguration.java:124)
at org.sonar.plugins.findbugs.FindbugsExecutor.execute(FindbugsExecutor.java:117)
... 31 more
ERROR:
ERROR: Re-run SonarQube Scanner using the -X switch to enable full debug logging.
Cleaning up file based variables
00:01
ERROR: Job failed: command terminated with exit code 1

Answer 1

My solution was to add this line in sonar-project.properties file:
sonar.java.binaries=.