This is my skyline.yaml file

#################

default:
  access_token_expire: 3600
  access_token_renew: 1800
  cors_allow_origins: []
  #database_url: sqlite:////tmp/skyline.db
  database_url: mysql://skyline:skyline123@localhost:3306/skyline
  debug: true
  log_dir: /var/log/skyline
  log_file: skyline.log
  prometheus_basic_auth_password: ''
  prometheus_basic_auth_user: ''
  prometheus_enable_basic_auth: false
  prometheus_endpoint: http://localhost:9091
  secret_key: aCtmgbcUqYUy_HNVg5BDXCaeJgJQzHJXwqbXr0Nmb2o
  session_name: session
  ssl_enabled: false
openstack:
  base_domains:
  - heat_user_domain
  default_region: RegionOne
  enforce_new_defaults: true
  extension_mapping:
    floating-ip-port-forwarding: neutron_port_forwarding
    fwaas_v2: neutron_firewall
    qos: neutron_qos
    vpnaas: neutron_vpn
  interface_type: public
  keystone_url: http://192.168.18.100:5000/v3
  nginx_prefix: /api/openstack
  reclaim_instance_interval: 604800
  service_mapping:
    baremetal: ironic
    compute: nova
    container: zun
    container-infra: magnum
    database: trove
    identity: keystone
    image: glance
    key-manager: barbican
    load-balancer: octavia
    network: neutron
    object-store: swift
    orchestration: heat
    placement: placement
    sharev2: manilav2
    volumev3: cinder
  sso_enabled: false
  sso_protocols:
  - openid
  sso_region: RegionOne
  system_admin_roles:
  - admin
  - system_admin
  system_project: service
  system_project_domain: Default
  system_reader_roles:
  - system_reader
  system_user_domain: Default
  system_user_name: skyline
  system_user_password: 'skyline123'
setting:
  base_settings:
  - flavor_families
  - gpu_models
  - usb_models
  flavor_families:
  - architecture: x86_architecture
    categories:
    - name: general_purpose
      properties: []
    - name: compute_optimized
      properties: []
    - name: memory_optimized
      properties: []
    - name: high_clock_speed
      properties: []
  - architecture: heterogeneous_computing
    categories:
    - name: compute_optimized_type_with_gpu
      properties: []
    - name: visualization_compute_optimized_type_with_gpu
      properties: []
  gpu_models:
  - nvidia_t4
  usb_models:
  - usb_c

############

My problem is if I login as admin then everything works!! But for normal account (end-user) I am able to login in UI but when I click any instance or anything it throwing access error and in logs its showing me following:

2023-08-08 04:49:04.869 | DEBUG | keystoneauth1.session:request:946 - GET call to identity for http://192.168.18.100:5000/v3/users/e8b10077f9f84e03bf115aa10ae13852/projects used request id req-8988e75a-97c4-4b2a-8a37-23572453d31d
2023-08-08 04:49:04.912 | DEBUG | urllib3.connectionpool:_make_request:456 - http://192.168.18.100:5000 "POST /v3/auth/tokens HTTP/1.1" 401 109
2023-08-08 04:49:04.913 | DEBUG | keystoneauth1.session:request:976 - Request returned failure status: 401
2023-08-08 04:49:04.914 | DEBUG | skyline_apiserver.api.v1.policy:list_policies:103 - Keystone token is invalid. No privilege to access system scope.

It is clear that skyline doesn't pass proper token or authorization when using a normal user account but it does work with admin account. What could be wrong here?