Debug log messages

Hi
I’m getting error messages turn up in my debug log.
They don’t seem to be causing any problems, but it would be nice if they could be cleaned up.
(my plugin is still labelled “Instagram Feed”, but I’m guessing the code is the same as the version number matches)

[28-May-2022 00:26:59 UTC] PHP Warning:  array_diff(): Expected parameter 2 to be an array, string given in /var/www/<snip>/plugins/instagram-feed/inc/class-sb-instagram-settings.php on line 381
[28-May-2022 00:26:59 UTC] PHP Warning:  Invalid argument supplied for foreach() in /var/www/<snip>/plugins/instagram-feed/inc/class-sb-instagram-settings.php on line 383
[28-May-2022 00:26:59 UTC] PHP Warning:  Illegal string offset 'feed' in /var/www/<snip>/plugins/instagram-feed/inc/class-sb-instagram-settings.php on line 389