Forkedbooter fails since a week


i have a maven java project which was running ok untill a week ago it keeps failing with following error, locally and on bit bucket everything ids fine:
------------------------------------------------------- T E S T S ------------------------------------------------------- Error: Could not find or load main class org.apache.maven.surefire.booter.ForkedBooter Results : Tests run: 0, Failures: 0, Errors: 0, Skipped: 0 [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 6.342 s [INFO] Finished at: 2018-12-04T13:26:10Z [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.18.1:test (default-test) on project film: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.18.1:test failed: The forked VM terminated without properly saying goodbye. VM crash or System.exit called? [ERROR] Command was /bin/sh -c cd /home/circleci/repo && /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -jar /home/circleci/repo/target/surefire/surefirebooter1382474520670823548.jar /home/circleci/repo/target/surefire/surefire130761965400733496tmp /home/circleci/repo/target/surefire/surefire_09144420838004072259tmp [ERROR] -> [Help 1] [ERROR] [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] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] Exited with code 1

any pointers what goes wrong?
thx in advance