aws-integrator cannot add role to worker node instance profile

I deployed CK with AWS overlay, but unit.aws-integrator got following error:

unit-kubernetes-control-plane-1: 19:51:39 WARNING unit.unit-kubernetes-control-plane-1.collect-metrics Error from server (Timeout): the server was unable to return a response in the time allotted, but may still be processing the request (get replicationcontrollers)
unit-aws-integrator-0: 19:51:51 INFO unit.aws-integrator/0.juju-log aws:18: An error occurred (NoSuchEntity) when calling the AddRoleToInstanceProfile operation: The role with name charm.aws.5807f201-b452-44f0-85c8-f81f1147b2e4.kubernetes-worker cannot be found.
unit-aws-integrator-0: 19:51:51 INFO unit.aws-integrator/0.juju-log aws:18: Retrying in 30 seconds
unit-kubernetes-control-plane-0: 19:51:52 WARNING unit.unit-kubernetes-control-plane-0.collect-metrics Unable to connect to the server: stream error: stream ID 7; INTERNAL_ERROR; received from peer
unit-aws-integrator-0: 19:52:21 ERROR unit.aws-integrator/0.juju-log aws:18: Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-aws-integrator-0/charm/reactive/aws.py", line 91, in handle_requests
    layer.aws.enable_instance_inspection(
  File "/var/lib/juju/agents/unit-aws-integrator-0/charm/lib/charms/layer/aws.py", line 243, in enable_instance_inspection
    role_name = _get_role_name(application_name, instance_id, region)
  File "/var/lib/juju/agents/unit-aws-integrator-0/charm/lib/charms/layer/aws.py", line 1044, in _get_role_name
    _ensure_role(application_name, role_name)
  File "/var/lib/juju/agents/unit-aws-integrator-0/charm/lib/charms/layer/aws.py", line 1089, in _ensure_role
    _retry_for_entity_delay(_add_role_to_instance_profile)
  File "/var/lib/juju/agents/unit-aws-integrator-0/charm/lib/charms/layer/aws.py", line 872, in _retry_for_entity_delay
    raise TimeoutAWSError()
charms.layer.aws.TimeoutAWSError: timed out

juju status: https://pastebin.ubuntu.com/p/vsd93wSB9r/
debug-log: https://pastebin.ubuntu.com/p/86gmdkJV2B/
overlay:

description: Charmed Kubernetes overlay to add native AWS support.
applications:
  aws-integrator:
    annotations:
      gui-x: "600"
      gui-y: "300"
    charm: aws-integrator
    num_units: 1
    trust: true
relations:
  - ['aws-integrator', 'kubernetes-control-plane']
  - ['aws-integrator', 'kubernetes-worker']