Source Build Error

I installed the required components to run KeyCloak. I downloaded the source but when I run the mvn clean install command, I get this error.

[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:14 min
[INFO] Finished at: 2021-10-07T20:26:19+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test (default-test) on project keycloak-server-spi-private: There are test failures.
[ERROR] Please refer to E:\Projects\Personal\Web\keycloak\server-spi-private\target\surefire-reports for the individual test results.
[ERROR] Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.
[ERROR] -> [Help 1]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <args> -rf :keycloak-server-spi-private

How do I fix this?