@markzahra, it is happening after I have connected my Instagram account which currently has 170 posts. Additionally, I opted to skip the data collection option on the initial setup and named my primary feed “Main”. At the moment I am now unable to reactivate the plugin because when I do the site crashes and I get an Error 502.
I have reinstalled the plugin to see if it solves the issue for now. At the moment I am able to access my site again and haven’t had a PHP fatal error yet.
I hope that helps. Let me know if you need any additional info.