The error seems to be generated by EasySocial Menu Module. After logging in and waiting a minute or so, it can be seen. I've currently replicated the issue at this link.
https://i.gyazo.com/add21ee564059366c0c6f31e8b4c4f92.png
https://i.gyazo.com/add21ee564059366c0c6f31e8b4c4f92.png