IllegalArgumentException when register ExceptionHandler about rest.vertx HOT 6 CLOSED

public static final int TEST_SERVER_PORT = 8181;
public static final String TEST_SERVER_HOST = "localhost";

@BeforeAll
static void deployVerticle(Vertx vertx, VertxTestContext testContext) {
    List<IRestController> activeControllers = Arrays.asList(new PrivateHelloRestController());
    SocketHandler socketHandler = new SocketHandler(vertx, null);
    vertx.deployVerticle(new WebServerVerticle(TEST_SERVER_PORT, null, socketHandler).with(activeControllers), testContext.succeeding(id -> testContext.completeNow()));
}

@Test
@Timeout(timeUnit = TimeUnit.SECONDS, value = 2)
void whenCallHello_thenGetResponse(Vertx vertx, VertxTestContext testContext) {
    WebClient webClient = WebClient.create(vertx);
    webClient.get(TEST_SERVER_PORT, TEST_SERVER_HOST, "/api/hello").send(ar -> {
        if (ar.succeeded()) {
            HttpResponse<Buffer> response = ar.result();
            assertThat(response.statusCode()).isEqualTo(200);
            assertThat(response.bodyAsString()).isEqualTo("Hello from Vert.x");
            testContext.completeNow();
        } else {
            testContext.failNow(ar.cause());
        }
    });
}

@Test
@Timeout(timeUnit = TimeUnit.SECONDS, value = 2)
void whenRequestIsUsedAndResponseIsModfied(Vertx vertx, VertxTestContext testContext) {
    WebClient webClient = WebClient.create(vertx);
    webClient.get(TEST_SERVER_PORT, TEST_SERVER_HOST, "/api/context").send(ar -> {
        if (ar.succeeded()) {
            HttpResponse<Buffer> response = ar.result();
            assertThat(response.statusCode()).isEqualTo(201);
            assertThat(response.bodyAsString()).isEqualTo("/api/context");
            testContext.completeNow();
        } else {
            testContext.failNow(ar.cause());
        }
    });
}

@Test
@Timeout(timeUnit = TimeUnit.SECONDS, value = 2)
void whenCallPrivateHello_thenGetResponse(Vertx vertx, VertxTestContext testContext) {
    WebClient webClient = WebClient.create(vertx);
    webClient.get(TEST_SERVER_PORT, TEST_SERVER_HOST, "/private/hello").bearerTokenAuthentication(generateToken()).send(ar -> {
        if (ar.succeeded()) {
            HttpResponse<Buffer> response = ar.result();
            assertThat(response.statusCode()).isEqualTo(200);
            assertThat(response.bodyAsString()).isEqualTo("Private hello from Vert.x");
            testContext.completeNow();
        } else {
            testContext.failNow(ar.cause());
        }
    });
}

@Test
@Timeout(timeUnit = TimeUnit.SECONDS, value = 2)
void whenCallPrivateHelloWithoutToken_thenGetError(Vertx vertx, VertxTestContext testContext) {
    WebClient webClient = WebClient.create(vertx);
    webClient.get(TEST_SERVER_PORT, TEST_SERVER_HOST, "/private/hello").send(ar -> {
        if (ar.succeeded()) {
            HttpResponse<Buffer> response = ar.result();
            assertThat(response.statusCode()).isEqualTo(401);
            assertThat(response.bodyAsString()).isNullOrEmpty();
            testContext.completeNow();
        } else {
            testContext.failNow(ar.cause());
        }
    });
}

private String generateToken() {
    JsonObject data = new JsonObject();
    data.put("sub", "the.user");
    data.put("id", 2);
    data.put("permissions", Arrays.asList("Admin"));
    JWTOptions options = new JWTOptions();
    options.setExpiresInSeconds(10);
    JWTAuth authProvider = JWTAuth.create(Vertx.vertx(), new JWTAuthOptions()
            .addPubSecKey(new PubSecKeyOptions()
                    .setAlgorithm("HS256")
                    .setPublicKey("93C7Z(I2k§h5\"BR1lHqH3jsZG5H8.D§P[!{c.&u1h!q*Ob3D!u-4bvX0iNL2+iP:7QFJ2L94Nv>*##t9")
                    .setSymmetric(true)
            ));
    return authProvider.generateToken(data, options);
}