Cannot access rest endpoint for engine


I keep on getting 404 error whenever I try to sent a message on Postman.
I’m trying this for a Spring-Boot App.

Can you show the POM file you’ve got for the spring boot app?
You might not have included the rest api.

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.camunda.bpm.springboot.example</groupId>
  <artifactId>camunda-bpm-spring-boot-starter-example-twitter</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <properties>
    <spring.boot.version>2.5.4</spring.boot.version>
    <camunda.spring.boot.starter.version>7.16.0</camunda.spring.boot.starter.version>
    <camunda-bpm-spring-boot-starter-rest.version>7.16.0</camunda-bpm-spring-boot-starter-rest.version>
    <twitter4j.version>4.0.7</twitter4j.version>
    <maven.compiler.plugin.version>3.8.1</maven.compiler.plugin.version>
  </properties>


  <dependencies>

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-dependencies</artifactId>
      <version>${spring.boot.version}</version>
    </dependency>

    <dependency>
      <groupId>org.camunda.bpm</groupId>
      <artifactId>camunda-bom</artifactId>
      <version>${camunda.spring.boot.starter.version}</version>
    </dependency>

    <dependency>
      <groupId>org.camunda.bpm.springboot</groupId>
      <artifactId>camunda-bpm-spring-boot-starter-rest</artifactId>
      <version>${camunda-bpm-spring-boot-starter-rest.version}</version>
    </dependency>

    <dependency>
      <groupId>com.h2database</groupId>
      <artifactId>h2</artifactId>
      <scope>runtime</scope>
    </dependency>

    <dependency>
      <groupId>org.twitter4j</groupId>
      <artifactId>twitter4j-core</artifactId>
      <version>${twitter4j.version}</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-runtime</artifactId>
    </dependency>
  </dependencies>


  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>${spring.boot.version}</version>
        <configuration>
          <layout>ZIP</layout>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>repackage</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>${maven.compiler.plugin.version}</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>

  <repositories>
    <repository>
      <id>camunda-bpm-nexus</id>
      <name>camunda-bpm-nexus</name>
      <url>https://app.camunda.com/nexus/content/groups/public</url>
    </repository>
  </repositories>

</project>

Please let me know if I have configured anything incorrectly . Thanks !