in reply to Captcha::reCAPTCHA::V2 Not Working

The first step is to look deeper into the web server error log. Maybe the module is not installed at all, or not accessible to the user your CGI script runs as?

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Re^2: Captcha::reCAPTCHA::V2 Not Working
by jack778 (Initiate) on Jan 11, 2019 at 04:42 UTC
    The module is installed.

    The server log says error is due to "End of script output before headers".