JMockit incompatible with JDK 10/11

Running Unit tests under JDK 10/11 produces error below. It was OK under JDK 8.

[ERROR] Errors: 
[ERROR]   BusinessRepositoryTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound Could...
[ERROR]   BusinessRepositoryTest>AbstractRepositoryTest.setUp:23 » ExceptionInInitializer
[ERROR]   BusinessUserRepositoryTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound C...
[ERROR]   BusinessUserRepositoryTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound C...
[ERROR]   TransactionRepositoryTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound Co...
[ERROR]   TransactionRepositoryTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound Co...
[ERROR]   TransactionRepositoryTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound Co...
[ERROR]   BusinessCustomerLinkServiceTest>AbstractRepositoryTest.setUp:23 » NoClassDefFound
[ERROR]   BusinessServiceTest.save:30 » NullPointer
[INFO] 
[ERROR] Tests run: 9, Failures: 0, Errors: 9, Skipped: 0

The contents of AbstractRepositoryTest is nothing but a Mockup of a public static method

@BeforeEach
void setUp() throws Exception {
    new MockUp<CafamilyUtils>() {
        @mockit.Mock
        public String getLoggedInUserID() {
            return "system";
        }
    };
}

The version of jmockit is too old (1.24) in pom.xml. It needs to be upgraded to a much newer version (1.47). Besides JMockit also requires the -javaagent JVM initialization parameter to be used, according to
https://jmockit.github.io/tutorial/Introduction.html#runningTests

<dependencies>
   <dependency>
      <groupId>org.jmockit</groupId>
      <artifactId>jmockit</artifactId>
      <version>${jmockit.version}</version>
      <scope>test</scope>
   </dependency>
</dependencies>

<plugins>
   <plugin>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.22.2</version> <!-- or some other version -->
      <configuration>
         <argLine>
            -javaagent:${settings.localRepository}/org/jmockit/jmockit/${jmockit.version}/jmockit-${jmockit.version}.jar
         </argLine>
      </configuration>
   </plugin>
</plugins>