Google Cloud KSM Error: Exception in thread "main" java.lang.NoClassDefFoundError: com/google/protobuf/MapFieldReflectionAccessor

💻 Environment:

Java Version: Corretto 17.0.8

Google Cloud KMS library: google-cloud-kms:2.38.0

Build Tool: Maven

IDE: IntelliJ IDEA Community Edition

📦 Dependencies (pom.xml):

<dependencies>
 <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-kms</artifactId>
    <version>2.38.0</version>
</dependency>

 <dependency>
    <groupId>com.google.protobuf</groupId>
    <artifactId>protobuf-java</artifactId>
    <version>4.0.0-rc-2</version>
 </dependency>

 <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-simple</artifactId>
    <version>2.0.9</version>
 </dependency>
</dependencies>

Code Sample:

import com.google.cloud.kms.v1.*;
import com.google.protobuf.ByteString;

import java.io.IOException;
import java.util.Base64;

public class KmsExample {
    public static void main(String[] args) throws IOException {
        final var projectId = "my-project";
        final var locationId = "global";
        final var keyRingId = "my-keyring";
        final var keyId = "my-key";

        CryptoKeyName keyName = CryptoKeyName.of(projectId, locationId, keyRingId, keyId);

        String plaintext = """
            {
                "pan": "1234567890123456",
                "cvv": "123",
                "expiry": "12/30"
            }
            """;

        try (KeyManagementServiceClient client = KeyManagementServiceClient.create()) {
            EncryptResponse encryptResponse = client.encrypt(keyName, ByteString.copyFromUtf8(plaintext));
            String encryptedBase64 = Base64.getEncoder().encodeToString(encryptResponse.getCiphertext().toByteArray());
            System.out.println("Encrypted (Base64): " + encryptedBase64);

            DecryptResponse decryptResponse = client.decrypt(keyName, encryptResponse.getCiphertext());
            String decrypted = decryptResponse.getPlaintext().toStringUtf8();
            System.out.println("Decrypted: " + decrypted);
        }
    }
}

Error Stack Trace:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/protobuf/MapFieldReflectionAccessor
    at com.google.cloud.kms.v1.stub.GrpcKeyManagementServiceStub.<clinit>(GrpcKeyManagementServiceStub.java:159)
    at com.google.cloud.kms.v1.stub.KeyManagementServiceStubSettings.createStub(KeyManagementServiceStubSettings.java:687)
    at com.google.cloud.kms.v1.KeyManagementServiceClient.<init>(KeyManagementServiceClient.java:783)
    at com.google.cloud.kms.v1.KeyManagementServiceClient.create(KeyManagementServiceClient.java:765)
    at com.example.KmsExample.main(KmsExample.java:31)
Caused by: java.lang.ClassNotFoundException: com.google.protobuf.MapFieldReflectionAccessor
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
    ... 6 more

Any guidance on how to resolve this class loading issue would be appreciated!