Loading Connectors page in Lenses fails with status code 400

I’m trying to set up a sink connector in Lenses, but I’m getting an error 400 and I’m not sure what the issue might be. Additionally, I need to refresh the page for new attempts.

If you are using Lenses version 5.3.2 or earlier, you need to refresh the page and try again. This error message usually appears when an incorrect or missing parameter is provided in the connector; in this case, you should refer to your connector’s documentation to identify the minimum parameters required for its operation. You can check the Lenses or connect logs to find the connector error. In Lenses 5.4, you don’t need to refresh the connectors page; simply modify the parameters, and the create option will be enabled for another attempt.