PHP7 Support?

I’m on PHP7 (latest) and the sign-up form shows following error :

Notice: Undefined variable: role in/home/thebigk/public_html/wp-content/plugins/ultimate-member/core/um-actions-register.php on line 275

I looked into the code and it appears that $role isn’t defined: echo ‘<input type=”hidden” name=”role” id=”role” value=”‘ . $role . ‘” />

Is there any way to fix this?

https://wordpress.org/plugins/ultimate-member/