internal server error(500) after Deploying full stack cap project using mta on cloudFoundary

[Dipnesh]

Hello community ,i have created a full stack application  then deployed my  application on cloudfoundary using commands :                                                                                                                                                               mbt build -t gen --mtar mta.tar .                                                                                                                             cf deploy gen/mta.tar .                                                                                                                                    it has successfully   deployed my application on cloudfoundary and given me three endpoints .                         my api  endpoint is working correctly but its frontend  endpoint is giving me internal server error with error code 500.

this is my mta.yml file code.                                                                                                                                   

_schema-version: 3.3.0

ID: Full_stack

description: A simple CAP project.

version: 1.0.0

modules:

  - name: Full_stack-srv

    type: nodejs

    path: gen/srv

    requires:

      - name: Full_stack-db

      - name: Full_stack-auth

    provides:

      - name: srv-api

        properties:

          srv-url: ${default-url}

    parameters:

      buildpack: nodejs_buildpack

      readiness-health-check-http-endpoint: /health

      readiness-health-check-type: http

    build-parameters:

      builder: npm

  - name: Full_stack-db-deployer

    type: hdb

    path: gen/db

    requires:

      - name: Full_stack-db

    parameters:

      buildpack: nodejs_buildpack

  - name: Full_stack

    type: approuter.nodejs

    path: app/router

    requires:

      - name: srv-api

        group: destinations

        properties:

          forwardAuthToken: true

          name: srv-api

          url: ~{srv-url}

      - name: Full_stack-auth

      - name: Full_stack-destination-service

        group: destinations

        properties:

          forwardAuthToken: false

          name: ui5

          url: https://ui5.sap.com

    parameters:

      disk-quota: 256M

      keep-existing-routes: true

      memory: 256M

  - name: Full_stack-app-content

    type: com.sap.application.content

    path: .

    requires:

      - name: Full_stack-repo-host

        parameters:

          content-target: true

    build-parameters:

      build-result: resources

      requires:

        - artifacts:

            - ns11project1.zip

          name: ns11project1

          target-path: resources/

  - name: ns11project1

    type: html5

    path: app/project1

    build-parameters:

      build-result: dist

      builder: custom

      commands:

        - npm install

        - npm run build:cf

      supported-platforms:

        []

resources:

  - name: Full_stack-db

    type: com.sap.xs.hdi-container

    parameters:

      service: hana

      service-plan: hdi-shared

  - name: Full_stack-auth

    type: org.cloudfoundry.managed-service

    parameters:

      config:

        tenant-mode: dedicated

        xsappname: Full_stack-${org}-${space}

      path: ./xs-security.json

      service: xsuaa

      service-plan: application

  - name: Full_stack-repo-host

    type: org.cloudfoundry.managed-service

    parameters:

      service: html5-apps-repo

      service-name: Full_stack-html5-srv

      service-plan: app-host

  - name: Full_stack-destination-service

    type: org.cloudfoundry.managed-service

    parameters:

      config:

        HTML5Runtime_enabled: true

        init_data:

          instance:

            destinations:

              - Authentication: NoAuthentication

                Name: ui5

                ProxyType: Internet

                Type: HTTP

                URL: https://ui5.sap.com

              - Authentication: NoAuthentication

                HTML5.DynamicDestination: true

                HTML5.ForwardAuthToken: true

                Name: Full_stack-srv-api

                ProxyType: Internet

                Type: HTTP

                URL: ~{srv-api/srv-url}

            existing_destinations_policy: update

        version: 1.0.0

      service: destination

      service-name: Full_stack-destination-service

      service-plan: lite

    requires:

      - name: srv-api

parameters:

  deploy_mode: html5-repo

  enable-parallel-deployments: true

build-parameters:

  before-all:

    - builder: custom

      commands:

        - npm ci

        - npx cds build --production

[MioYasutake]

@Dipnesh Do you see any errors in the approuter log? Try `cf logs Full_stack`.