Steven Zahm@ chris
Yes, I was able to duplicate, but only after enabling the “Use advanced image finder” option in NextScripts: Social Networks Auto-Poster on the admin settings page under their Settings tab.
With the “Use advanced image finder” option enabled, if I select the “Do not add Open Graph Tags” option in the in the “Open Graph” Tags section of the settings the pages load fine. So, there is something going on with those two settings.
The way the Open Graph tags are coded to be added to the page puzzles me. It seems they cache the entire page to simply output a few meta tags in the page head. I’m sure they must have a reason but I think it is this that is causing the trouble because I think PHP is getting confused or something with the multiple output buffers being open and cached which is resulting in this error. Another item I find very odd is that this is coded to happen based on if a select bot or browser visits the page. For example, the page will load fine when using IE 11 or Firefox but not Chrome or Edge.
At this point, I’m do not think Connections is the source of the conflict. I’m leaning towards their implementation of output buffering the entire page content as the source. It certainly could be a bug in Connections, but I just do not see how at the moment. I would suggest pointing this out to their support of you are a Pro user of their plugin.
Hope this helps!