Deploying web app on Cloud foundry giving fileNotFoundException

I am trying to push maven application on Pivotal cloud foundary with following manifest file configuration.

applications:
- name: abc-app
  host: abc-app
  instances: 1
  memory: 1024m
  builpack: java_buildpack_beta
  path: ./target/abc-7.0.46-SNAPSHOT.war
  
  JAVA_VERSION: 11.0.6

I want to load properties files like bootstrap.properties and server.properties. How to do that? I am getting this exception while doing cf push from cloud foundary CLI.

       2021-08-30T19:12:42.97+0530 OUT [CONTAINER] loudAutoReconfigurationServletContainerInitializer INFO    Initializing ServletContext with Auto-reconfiguration ApplicationContextInitializers
       2021-08-30T19:12:43.03+0530 OUT [CONTAINER] lina.core.ContainerBase.[Catalina].[localhost].[/] INFO    No Spring WebApplicationInitializer types detected on classpath
       2021-08-30T19:12:43.05+0530 ERR java.io.FileNotFoundException: null/bootstrap.properties (No such file or directory)

Thanks in advance!