Can you let us know what you were doing when you first saw this?
We have some other tips in the Bugs category, for reporting bugs too, that help us out when trying to figure them out: staging.glitch.com/forum/bugs/
That link asks me for a username and pass that doesn't match mine?
Anyhow, I had just entered (I forgot which land) and went to check out a pack of strawberry seeds someone had left behind and received that message. As stated, any interactions after that resulted in the message as well. I was in need of some nourishment and was unable to pick up any items, but someone was able to give me a sandwich and I was saved. :-)
Also, entering another location cleared the issue up for me.