Local costmap not showing obstacles

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Hello,

I'm using move_base package to navigate my robot.
The navigation seems to work, however no obstacles are detected.
The local costmap only shows the static layer, but not the obstacle_layer and inflater_layer.
The image below shows the RVIZ screenshot with the local costmap enabled. At the time the screenshot was taken, there were actually multiple large obstacles in the room. The pink colored drawings are the local costmap, but when I disable the static layer, the whole local costmap is empty.

Here are my costmap param files:

costmap_common_params.yaml:

obstacle_range: 2.5
raytrace_range: 3.0
footprint: [[-0.165, -0.170], [0.165, -0.170], [0.165, 0.170], [-0.165, 0.170]]
publish_voxel_map: true
meter_scoring: true

global_costmap_params.yaml:

global_costmap:
  global_frame: map
  robot_base_frame: base_link
  update_frequency: 5.0
  static_map: true

  inflater_layer:
    inflation_radius: 0.2
    cost_scaling_factor: 0.5

  plugins:
  - {name: static_layer, type: "costmap_2d::StaticLayer"}
  - {name: inflater_layer, type: "costmap_2d::InflationLayer"}

local_costmap_params.yaml:

local_costmap:
  global_frame: odom
  robot_base_frame: base_link
  update_frequency: 5.0
  publish_frequency: 2.0
  static_map: false
  width: 3.0
  height: 3.0
  rolling_window: true

  plugins:
  - {name: obstacle_layer, type: "costmap_2d::ObstacleLayer"}
  - {name: inflater_layer, type: "costmap_2d::InflationLayer"}
  - {name: static_layer, type: "costmap_2d::StaticLayer"}

  inflater_layer:
    inflation_radius: 0.35
    cost_scaling_factor: 0.5


  obstacle_layer:
    observation_sources: laser_scan_sensor
    laser_scan_sensor: {sensor_frame: laser_frame, 
data_type: LaserScan, 
topic: scan, marking: true, 
clearing: true, 
max_obstacle_height: 3, 
min_obstacle_height: -3, 
inf_is_valid: true, 
obstacle_range: 2.5, 
combination_method: 0,
raytrace_range: 3}

Does anyone know why I can't see any live obstacles?