Current thread is not owner of the lock! Hazelcast

I have a Spring boot application which has Hazelcast for caching in it. When multiple instances are clustered with Hazelcast, I am having this exception on the unlock operation:

java.lang.IllegalMonitorStateException: Current thread is not owner of the lock! -> Owner: 33ce48f8-dda3-471f-abae-994d25dcc030, thread ID: 55
    at com.hazelcast.concurrent.lock.operations.UnlockOperation.unlock(UnlockOperation.java:75) ~[hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.concurrent.lock.operations.UnlockOperation.run(UnlockOperation.java:64) ~[hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.Operation.call(Operation.java:170) ~[hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.call(OperationRunnerImpl.java:208) [hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:197) [hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:413) [hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:153) [hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:123) [hazelcast-3.11.4.jar!/:3.11.4]
    at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run(OperationThread.java:110) [hazelcast-3.11.4.jar!/:3.11.4]

Here is my component where I do locking and unlocking operations:

package com.companyname.service.servicename.job;
import com.hazelcast.core.ILock;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
public class UpdateRaceCacheJob {

    @Scheduled(fixedDelay = 10000)
    public void updateRaceCache() {
        ILock lock = hazelcastInstance.getLock("race-lock");
        try {
            if (!lock.tryLock()) {
                return;
            }

            // service calls

        } finally {
            lock.unlock();
        }
    }
}

When I replace lock.unlock(); line with:

if (lock.isLockedByCurrentThread()) {
    lock.unlock();    
}

I get a warning from sonar: Unlock this lock along all executions paths of this method.

Thank you!