g-recaptcha-response Error

[celextel]

We have installed p01contact-1.1.5 in our GetSimple CMS.

Please find this form at our following URL:
http://www.shastras.com/contact/

Following Error Message is seen at /home/xxx/public_html/data/other/logs/errorlog.txt:
[30-May-2019 08:19:59 Asia/Kolkata] PHP Notice: Undefined index: g-recaptcha-response in /home/xxx/public_html/plugins/p01-contact/src/P01contact_Field.php on line 116

Please provide us the Fix for this if this could be corrected.

Thanks,

Lakshmanan

[celextel]

We have the following reCAPTCHA Codes:
reCAPTCHA v2 Verify requests with a challenge
"I'm not a robot" tickboxValidate requests with the "I'm not a robot" tickbox

The following reCAPTCHA Codes do not work:
reCAPTCHA v3 Verify requests with a score

(reCaptcha admin) URLs show the following incorrect Links at p01contact configuration:
http://www.shastras.com/%22https://www.google.com/recaptcha/admin/%22