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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