Gridkit error

Hey Everybody! My site keeps throwing the following error over and over, recently causing my site to crash. Any ideas on how to fix this? Many thanks.

[24-Jan-2021 22:33:06 UTC] PHP Warning: Declaration of GKSUpgraderSkin::feedback($string) should be compatible with WP_Upgrader_Skin::feedback($string, …$args) in /home/mde667no6sq5/public_html/wp-content/plugins/grid-kit-premium/grid-kit-premium.php on line 711