Camunda connector with Gradle returns "If you are using a connector, make sure theconnect process engine plugin is registered with the process engine"

I try to implement Camunda http-connector in my spring boot - Gradle based project, using the below Gradle configurations and dependencies the project builds correctly but when I run the project, it returns:

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngineFactoryBean': FactoryBean threw exception on object creation; nested exception is org.camunda.bpm.engine.ParseException: ENGINE-09005 Could not parse BPMN process. Errors: 
    * One of the attributes 'class', 'delegateExpression', 'type', or 'expression' is mandatory on serviceTask. If you are using a connector, make sure theconnect process engine plugin is registered with the process engine. | resource some-path\test.bpmn | line 27 | column 46

This is my build.gradle file.

    buildscript {
        dependencies {
            classpath 'org.yaml:snakeyaml:1.26'
        }
    }
    
    plugins {
        id 'org.springframework.boot' version '2.5.8'
        id 'io.spring.dependency-management' version '1.0.9.RELEASE'
        id 'java'
        id "org.liquibase.gradle" version "2.0.2"
        id 'jacoco'
    }
    group = 'some-group'
    version = '0.0.1-SNAPSHOT'
    sourceCompatibility = 11
    targetCompatibility = 11
    
    repositories {
        //mavenCentral()
        maven {
            url "some-url"
        }
    }
    
    ext {
        sentryVersion = '5.3.0'
    }
    
    test {
        finalizedBy jacocoTestReport
    }
    
    jacocoTestReport {
        reports {
            xml.enabled true
            html.enabled true
            csv.enabled false
        }
    }
    
    dependencies {
    
    
        // ==== Spring dependencies ====
        implementation "org.springframework.boot:spring-boot-starter-web"
        implementation "org.springframework.boot:spring-boot-starter-data-jpa"
    
        // Sentry
        implementation "io.sentry:sentry-logback:$sentryVersion"
    
    
    //    implementation 'org.camunda.bpm.springboot:camunda-bpm-spring-boot-starter-rest:7.17.0'
    
        implementation 'org.camunda.bpm.springboot:camunda-bpm-spring-boot-starter-webapp:7.15.0'
        implementation 'org.camunda.bpm.extension:camunda-bpm-identity-keycloak:7.15.0'
    //    implementation 'org.camunda.bpm.springboot:camunda-bpm-spring-boot-starter:7.15.0'
        // https://mvnrepository.com/artifact/org.camunda.bpm.springboot/camunda-bpm-spring-boot-starter-rest
        implementation 'org.camunda.bpm.springboot:camunda-bpm-spring-boot-starter-rest:7.19.0'
    
    
    
    // https://mvnrepository.com/artifact/org.camunda.bpm/camunda-engine-plugin-connect
    //    implementation 'org.camunda.bpm:camunda-engine-plugin-connect:7.20.0-alpha2'
    
    //    implementation 'com.nimbusds:oauth2-oidc-sdk:9.12'
    
    
        implementation 'org.springframework.boot:spring-boot-starter-security'
    //    implementation 'org.camunda.bpm.extension:camunda-platform-7-keycloak:7.17.0'
        implementation 'org.keycloak:keycloak-spring-boot-starter:15.0.2'
    //    implementation 'org.springframework.security:spring-security-oauth2-core:5.5.1'
        implementation 'org.springframework.boot:spring-boot-starter-oauth2-client:2.6.2'
    
        implementation 'org.springframework.boot:spring-boot-starter-oauth2-resource-server'
        implementation 'org.slf4j:slf4j-api:1.7.32'
        implementation 'ch.qos.logback:logback-classic:1.2.5'
    
    
    
       implementation 'org.keycloak:keycloak-core:21.1.1'
    
    
        implementation 'org.camunda.bpm.extension:camunda-bpm-identity-keycloak:2.2.3'
    
        // Camunda Connector
        implementation 'org.camunda.connect:camunda-connect-http-client:1.3.0'
        implementation 'org.camunda.connect:camunda-connect-soap-http-client:1.3.0'
        implementation 'org.camunda.connect:camunda-connect-core:1.1.0'
        implementation 'org.camunda.bpm:camunda-engine:7.15.0'
        implementation 'org.camunda.spin:camunda-spin-core:1.9.0'
        implementation 'org.camunda.spin:camunda-spin-dataformat-json-jackson:1.9.0'
        implementation 'org.camunda.spin:camunda-spin-dataformat-xml-dom:1.9.0'
        implementation 'org.camunda.bpm:camunda-engine-plugin-spin:7.15.0'
        implementation 'org.camunda.bpm:camunda-bom:7.15.0'
        implementation 'org.camunda.bpm.dmn:camunda-engine-dmn-bom:7.15.0'
        implementation 'org.camunda.connect:camunda-connect-connectors-all:1.0.0'
        implementation 'org.camunda.bpm:camunda-engine-plugin-connect:7.15.0'
    
    
    
        // Postgres JDBC
        runtimeOnly 'org.postgresql:postgresql'
        runtimeOnly 'com.h2database:h2'
        runtimeOnly 'com.sun.xml.bind:jaxb-impl:2.2.3'
        // Lombok
        implementation "org.projectlombok:lombok"
        annotationProcessor "org.projectlombok:lombok"
       implementation "org.keycloak:keycloak-admin-client:13.0.0"
    
    }
    
    def appProperties = new org.yaml.snakeyaml.Yaml().load(file("src/main/resources/application-local.yml").newInputStream())
    def liquibaseProperties = new org.yaml.snakeyaml.Yaml().load(file("src/main/resources/liquibase.yaml").newInputStream())
    diffChangeLog.dependsOn assemble
    
    //liquibase {
    //    activities {
    //        main {
    //            changeLogFile "src/main/resources/db/changelog/changes/V" + migrationNumber() + "_changelog.yaml"
    //            referenceUrl 'hibernate:spring:' + liquibaseProperties.getAt("entities-package-path") + '?dialect=' + liquibaseProperties.dialect
    //            url appProperties.spring.datasource.url
    //            username appProperties.spring.datasource.username
    //            password appProperties.spring.datasource.password
    //            driver liquibaseProperties.driver
    //        }
    //    }
    //}
    
    static def migrationNumber() {
        def files = new File("src/main/resources/db/changelog/changes")
                .listFiles();
    
        if (files == null)
            return 0
    
        return files.size();
    }
    jar {
                enabled = true
         }

And this is my Camunda BPMN process file:


    <?xml version="1.0" encoding="UTF-8"?>
    <bpmn2:definitions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bpmn2="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:camunda="http://camunda.org/schema/1.0/bpmn" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="_1bTwQUkWEeO-QfaFiKQ6Gw" targetNamespace="http://camunda.org/examples" exporter="Camunda Modeler" exporterVersion="5.15.0" xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd">
      <bpmn2:message id="Message_3a4udev" name="Message_3a4udev" />
      <bpmn2:process id="CAMT_Management_Workflow_V1.0" name="CAMT_Management_Workflow_V1.0" isExecutable="true">
        <bpmn2:scriptTask id="scriptTask" name="Welcome Message" scriptFormat="groovy">
          <bpmn2:extensionElements>
            <camunda:inputOutput>
              <camunda:inputParameter name="player">
                <camunda:script scriptFormat="groovy">
                  players = ["Fritz", "Heinz", "Horst", "Klaus"]
                  players[new Random().nextInt(players.size())]
                </camunda:script>
              </camunda:inputParameter>
            </camunda:inputOutput>
          </bpmn2:extensionElements>
          <bpmn2:script>
            println "Hello $player! Welcome to our casino"
          </bpmn2:script>
        </bpmn2:scriptTask>
        <bpmn2:endEvent id="Event_0ze79i7">
          <bpmn2:incoming>Flow_16h5tsc</bpmn2:incoming>
        </bpmn2:endEvent>
        <bpmn2:startEvent id="Event_0dillfr">
          <bpmn2:outgoing>Flow_0vfmd2r</bpmn2:outgoing>
        </bpmn2:startEvent>
        <bpmn2:sequenceFlow id="Flow_0vfmd2r" sourceRef="Event_0dillfr" targetRef="Activity_0vcor0x" />
        <bpmn2:serviceTask id="Activity_0vcor0x">
          <bpmn2:extensionElements>
            <camunda:connector>
              <camunda:inputOutput>
                <camunda:inputParameter name="method">POST</camunda:inputParameter>
                <camunda:inputParameter name="payload">{
      "assessmentRequestId": "CA-2309-03858",
      "emailType": "EMAIL_FOR_ASSESSMENT_UPDATE"
    }</camunda:inputParameter>
                <camunda:inputParameter name="url">http://localhost:8180/email/send-email</camunda:inputParameter>
              </camunda:inputOutput>
              <camunda:connectorId>http-connector</camunda:connectorId>
            </camunda:connector>
          </bpmn2:extensionElements>
          <bpmn2:incoming>Flow_0vfmd2r</bpmn2:incoming>
          <bpmn2:outgoing>Flow_16h5tsc</bpmn2:outgoing>
        </bpmn2:serviceTask>
        <bpmn2:sequenceFlow id="Flow_16h5tsc" sourceRef="Activity_0vcor0x" targetRef="Event_0ze79i7" />
      </bpmn2:process>
      <bpmndi:BPMNDiagram id="BPMNDiagram_1">
        <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="CAMT_Management_Workflow_V1.0">
          <bpmndi:BPMNShape id="Event_0dillfr_di" bpmnElement="Event_0dillfr">
            <dc:Bounds x="152" y="82" width="36" height="36" />
          </bpmndi:BPMNShape>
          <bpmndi:BPMNShape id="Activity_0ok0d83_di" bpmnElement="Activity_0vcor0x">
            <dc:Bounds x="340" y="70" width="100" height="80" />
          </bpmndi:BPMNShape>
          <bpmndi:BPMNShape id="Event_0ze79i7_di" bpmnElement="Event_0ze79i7">
            <dc:Bounds x="602" y="102" width="36" height="36" />
          </bpmndi:BPMNShape>
          <bpmndi:BPMNEdge id="Flow_0vfmd2r_di" bpmnElement="Flow_0vfmd2r">
            <di:waypoint x="188" y="100" />
            <di:waypoint x="259" y="100" />
            <di:waypoint x="259" y="110" />
            <di:waypoint x="340" y="110" />
          </bpmndi:BPMNEdge>
          <bpmndi:BPMNEdge id="Flow_16h5tsc_di" bpmnElement="Flow_16h5tsc">
            <di:waypoint x="440" y="110" />
            <di:waypoint x="526" y="110" />
            <di:waypoint x="526" y="120" />
            <di:waypoint x="602" y="120" />
          </bpmndi:BPMNEdge>
        </bpmndi:BPMNPlane>
      </bpmndi:BPMNDiagram>
    </bpmn2:definitions>