[ERROR: json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 182]

# in file pipeline.yaml
        - name: TF_CONFIG
          value: "{
  \"cluster\": {
    \"worker\": [\"dist-strat-example-worker-0:5000\",\"dist-strat-example-worker-1:5000\"], 
    \"ps\": [\"dist-strat-example-ps-0:5000\"], 
### '],}', the middle ',' should not exist
    \"chief\": [\"dist-strat-example-chief:5000\"],},    
  \"task\": {
    \"type\": \"worker\",
    \"index\": \"0\"
  }
}"

(base) maye@maye-Inspiron-5547:~/github_repository/tensorflow_ecosystem/distribution_strategy$ kubectl logs dist-strat-example-worker-0-7mqqg 
2024-02-13 16:32:23.777522: I tensorflow/core/platform/cpu_feature_guard.cc:210] This TensorFlow binary is optimized to use available CPU instructions in performance-critical operations.
To enable the following instructions: AVX2 FMA, in other operations, rebuild TensorFlow with the appropriate compiler flags.
Traceback (most recent call last):
  File "/tf_std_server.py", line 67, in <module>
    main()
  File "/tf_std_server.py", line 41, in main
    if cluster_resolver.task_type in ("worker", "ps"):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/tensorflow/python/distribute/cluster_resolver/tfconfig_cluster_resolver.py", line 104, in task_type
    task_info = _get_value_in_tfconfig(_TASK_KEY, {})
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/tensorflow/python/distribute/cluster_resolver/tfconfig_cluster_resolver.py", line 43, in _get_value_in_tfconfig
    tf_config = _load_tf_config()
                ^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/tensorflow/python/distribute/cluster_resolver/tfconfig_cluster_resolver.py", line 39, in _load_tf_config
    return json.loads(os.environ.get(_TF_CONFIG_ENV, '{}'))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/json/decoder.py", line 353, in raw_decode
    obj, end = self.scan_once(s, idx)
               ^^^^^^^^^^^^^^^^^^^^^^
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 182 (char 181)
(base) maye@maye-Inspiron-5547:~/github_repository/tensorflow_ecosystem/distribution_strategy$ 

(base) maye@maye-Inspiron-5547:~/github_repository/tensorflow_ecosystem/distribution_strategy$ kubectl describe pod dist-strat-example-worker-0-7mqqg
Name:             dist-strat-example-worker-0-7mqqg
Namespace:        default
Priority:         0
Service Account:  default
Node:             maye-inspiron-5547/192.168.0.104
Start Time:       Wed, 14 Feb 2024 00:32:12 +0800
Labels:           job=worker
                  name=dist-strat-example
                  task=0
Annotations:      <none>
Status:           Running
IP:               10.244.0.179
IPs:
  IP:           10.244.0.179
Controlled By:  ReplicationController/dist-strat-example-worker-0
Containers:
  tensorflow:
    Container ID:  containerd://613170ce2079886726f3984679a45f8387b0bd9d49b3fe7b97c48b08db905655
    Image:         tf_std_server:v1
    Image ID:      sha256:117ff425f04f86b62e85a1a7ca654d0c36e9c8ac3bcc78f413984e5cbddb8421
    Port:          5000/TCP
    Host Port:     0/TCP
    Command:
      /usr/bin/python
      /tf_std_server.py
      
    State:          Waiting
      Reason:       CrashLoopBackOff
    Last State:     Terminated
      Reason:       Error
      Exit Code:    1
      Started:      Wed, 14 Feb 2024 00:33:08 +0800
      Finished:     Wed, 14 Feb 2024 00:33:11 +0800
    Ready:          False
    Restart Count:  3
    Environment:
      TF_CONFIG:  { "cluster": { "worker": ["dist-strat-example-worker-0:5000","dist-strat-example-worker-1:5000"], "ps": ["dist-strat-example-ps-0:5000"], "chief": ["dist-strat-example-chief:5000"],}, "task": { "type": "worker", "index": "0" } }
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-khlnz (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             False 
  ContainersReady   False 
  PodScheduled      True 
Volumes:
  kube-api-access-khlnz:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason     Age                From               Message
  ----     ------     ----               ----               -------
  Normal   Scheduled  86s                default-scheduler  Successfully assigned default/dist-strat-example-worker-0-7mqqg to maye-inspiron-5547
  Normal   Pulled     30s (x4 over 85s)  kubelet            Container image "tf_std_server:v1" already present on machine
  Normal   Created    30s (x4 over 83s)  kubelet            Created container tensorflow
  Normal   Started    30s (x4 over 83s)  kubelet            Started container tensorflow
  Warning  BackOff    0s (x6 over 71s)   kubelet            Back-off restarting failed container tensorflow in pod dist-strat-example-worker-0-7mqqg_default(5a1300ff-81b5-44bf-9232-f5d335b9e6fc)
(base) maye@maye-Inspiron-5547:~/github_repository/tensorflow_ecosystem/distribution_strategy$ 

[SOLUTION]

This error is due to that in file "pipeline.yaml", there is "," in "],}", there should be no "," before "}".