Error updating document

karengiselt

https://s3.amazonaws.com/zotero.org/images/forums/u11603375/twc2owfxigei6ru5nnhj.png

Hi, I've been working on my thesis with Zotero, and it's been great. However, lately, whenever I try to edit a citation, the sign above appears. I've followed the instructions on the troubleshooting page for Google Docs, which has worked occasionally, but then it stops working again. Could you please give me a hand with this? It seems I might have the same issue every time I open the document.

Many thanks!