[GitHub] [incubator-superset] gamebusterz opened a new issue #8607: Malformed JSON in the extras field: SyntaxError: Unexpected end of JSON input

[GitBox <gi...@apache.org>]

gamebusterz opened a new issue #8607: Malformed JSON in the extras field: SyntaxError: Unexpected end of JSON input
URL: https://github.com/apache/incubator-superset/issues/8607
 
 
   While adding a new database connection (tried for Postgres and Redshift both), clicking on '**Test Connection**' gives  `Malformed JSON in the extras field: SyntaxError: Unexpected end of JSON input` error.
   The **Extra** field has 
   ```
   {
       "metadata_params": {},
       "engine_params": {},
       "metadata_cache_timeout": {},
       "schemas_allowed_for_csv_upload": []
   }
   ```
   And the **Secure Extra** field is empty. I also tried removing the JSON in the **Extra** field altogether but I still get this error. 
   
   The connection strings, I've tried are:
   `redshift+psycopg2://user:pass@host/dbname` for Redshift and `postgresql://user:pass@host:5432/dbname` for Postgres 
   
   ### Expected results
   The connection should be tested successfully.
   
   ### Actual results
   Clicking on '**Test Connection**' gives  `Malformed JSON in the extras field: SyntaxError: Unexpected end of JSON input` error.
   
   #### Screenshots
   <img width="449" alt="Screenshot 2019-11-20 at 15 19 36" src="https://user-images.githubusercontent.com/6880188/69229269-236ed280-0bab-11ea-9f2a-3e531e1b1882.png">
   
   #### How to reproduce the bug
   
   1. Go to Sources > Databases
   2. Click on 'Add a new record' (Plus button)
   3. Keeping all the field as it is, just add the database name and database URI
   4. Click on 'Test Connection' to see the error.
   
   ### Environment
   
   (please complete the following information):
   
   - superset version: `"0.999.0dev",`
   - python version: `Python 3.6.7`
   - node.js version: `v13.1.0`
   - npm version: `6.12.1`
   
   ### Checklist
   
   Make sure these boxes are checked before submitting your issue - thank you!
   
   - [X] I have checked the superset logs for python stacktraces and included it here as text if there are any.
   - [X] I have reproduced the issue with at least the latest released version of superset.
   - [X] I have checked the issue tracker for the same issue and I haven't found one similar.
   
   ### Additional context
   
   I have copied the default JSON in the extras field and checked its validity, and it is a valid JSON.
   

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