After customizing DMN engine i am unable to load camunda welcome page and rest services

Hi My project need to add below lines

org.camunda.bpm.springboot
camunda-bpm-spring-boot-starter-rest

<dependency>
  <groupId>org.camunda.bpm.springboot</groupId>
  <artifactId>camunda-bpm-spring-boot-starter-webapp</artifactId>
</dependency>

when I run the project getting following error:
Error creating bean with name ‘org.camunda.bpm.engine.spring.SpringProcessEngineServicesConfiguration’: Unsatisfied dependency expressed through field ‘processEngine’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘org.camunda.bpm.spring.boot.starter.CamundaBpmAutoConfiguration$ProcessEngineConfigurationImplDependingConfiguration’: Unsatisfied dependency expressed through field ‘processEngineConfigurationImpl’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘processEngineConfiguration’ defined in class path resource [com/xceedance/config/CamundaProcessEngineConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.camunda.bpm.engine.spring.SpringProcessEngineConfiguration]: Illegal arguments to factory method ‘processEngineConfiguration’; args: ; nested exception is java.lang.IllegalArgumentException: object is not an instance of declaring class