LuozhuZhang opened a new issue, #21196:
URL: https://github.com/apache/superset/issues/21196

   I use 
[docker](https://superset.apache.org/docs/installation/installing-superset-using-docker-compose/)
 to start superset
   
   Enter the `URI` according to the format of the [official 
document](https://superset.apache.org/docs/databases/postgres) (it can be 
connected locally, indicating that the URI format is correct) 👇
   
   `postgresql://{username}:{password}@{host}:{port}/{database}`
   
   After that I received an error notification, and I checked the console and 
found that I received a `422` error notification
   
   <img width="667" alt="Screen Shot 2022-08-25 at 19 43 39" 
src="https://user-images.githubusercontent.com/70309026/186655619-d0e794db-16fc-4d57-bd5d-33b867297d01.png";>
   
   
![image](https://user-images.githubusercontent.com/70309026/186655674-78842f8b-abb1-4071-a76a-abb4937fcd01.png)
   
   ---
   
   I want to ask what is the reason for this, is there any related issue you 
can refer to?
   
   I am used to using docker to start superset, does it have anything to do 
with this error?


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