User’s point

Thanks for your help in the referral set up. It worked out just the way you said. Please, I need your help in this. Am using the plugging for gambling on my site. Especially, the Quads, and Raffles game. And people buy the exact points to play with with their real money. But each I see an alert of point purchase I go to the user profile to edit his/her point manually. And most often times I edit. I get this error code in my error log.

PHP Warning: array_key_exists() expects parameter 2 to be array, null given in /home-directory/vidyen-point-system-vyps/includes/functions/core/vidyen_user_log_func.php on line 281.

Please, is there any way user can load points to thier account from mycred. As their is an option for them to transfer to mycred. Any help you can render for manual edit to be avoided, please do let me. Thanks