Array Key Error

Hello,

I have this error but haven’t done anything out of the ordinary, just editing regular plugin options. Can you tell me what to fix by looking at this code:

Warning: array_key_exists() expects parameter 2 to be array, string given in /nfs/c09/h04/mnt/188797/domains/juliancohenlive.com/html/wp-content/plugins/alpine-photo-tile-for-instagram/gears/alpinebot-display.php on line 90

Thanks!

https://ww.wp.xz.cn/plugins/alpine-photo-tile-for-instagram/