Since recently, I have a warning message that appears on my blog and it seems to be linked to the Instagram feed. That message is always above the feed, at the bottom of the home page and on all the side bars, on the computer and mobile version of the blog.
I haven’t done any major change, I am mainly posting articles and haven’t edited the theme (grandblog, themeforest).
The message is: Warning : Invalid argument supplied for foreach() in /homepages/33/d743979624/htdocs/clickandbuilds/Seayoulater/wp-content/themes/grandblog-2.6/lib/custom.lib.php on line 399
You can see it on the blog: https://seayoulater.net
Would it be possible to have some help to fix it please?
Thank you very much,