Your reCAPTCHA settings have not been configured correctly, which is why you are seeing the reCAPTCHA error on the login page and cannot log in to the admin panel.
To resolve this issue, you need to disable reCAPTCHA from the database:
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Access your database and go to the settings table.
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Search for reCAPTCHA and disable (Make the status Zero) the reCAPTCHA option from there.
- Visit your website and clear the cache by navigating to yourwebsite/cache-clear.
Once this is done, you can log in to the admin panel and reconfigure the settings.