text: Title: [Q]: wandb.sweep not working
  Body: ### Ask your question
  
  Hello! 
  I put my question as a question, but I sincerely do not know if it is a bug or something I do wrongly. 
  Here is my Python code:
  ```python
  # 2: Define the search space
  sweep_configuration = {
      "method": "random",
      "metric": {"goal": "minimize", "name": "score"},
      "parameters": {
          "x": {"max": 0.1, "min": 0.01},
          "y": {"values": [1, 3, 7]},
      },
  }
  
  if __name__ == "__main__":
      import wandb
      wandb.login()
      print("logged in")
      # 3: Start the sweep
      score = 0
      sweep_id = wandb.sweep(sweep=sweep_configuration, project="<good_project>", entity="<good_entity>")
      print(sweep_id)
  ```
  
  However, when I run it, i got the following error:
  ```cmd
    File "C:\Users\maxen\anaconda3\envs\my_RN\Lib\site-packages\wandb\util.py", line 853, in no_retry_4xx
      raise UsageError(body["errors"][0]["message"])
  wandb.errors.errors.UsageError: Sweep user not valid
  ```
  I've looked at several sources and it appears that all of them are doing the same as me... so i do not see what is wrong!
  Thanks for your answer!