Skycandle.in / Gpa Commerce — aadhaar is not validating during signup

Aadhaar is not validating during signup

https://digitizeindia.gov.in/signup

I checked with different aadhar numbers of my family but no aadhar is going to validate. It is giving some run time error of php coding.
A php error was encountered
Severity: notice

Message: undefined property: auth:$key

Filename: controllers/auth. Php

Line number: 1018

Backtrace:

File: /var/www/nginx/html/application/modules/auth/controllers/auth. Php
Line: 1018
Function: _error_handler

File: /var/www/nginx/html/application/modules/auth/controllers/auth. Php
Line: 865
Function: createauth

File: /var/www/nginx/html/application/modules/auth/controllers/auth. Php
Line: 496
Function: run

File: /var/www/nginx/html/index. Php
Line: 284
Function: require_once