Agent successfully completes tool, but doesn't respond -> Internal service error ({"success":false,"message":"Authentication failure. Missing xsrf token"})

I have an agent that, as of yesterday, was working: successfully running its tool function, and returning a summary of the response. Today, no change (same prompt, configuration, etc.), and the running of the tool works according to the "Current Activity" section to the right and progress summary in the chat window. But the agent doesn't communicate the response. It hangs "Thinking..." and an Error message appears in the bottom right, "Internal service error", which as far as I can tell is tied to {"success":false,"message":"Authentication failure. Missing xsrf token"} found in Chrome's developer tools...

Hi @Killian_Frailey,

Apologies for the issue. That is very odd that the exact same setup was previously working and has now regressed.

Let me share this with out AI Agents team, my guess is that we may have made a tweak to the code and can hopefully get it reverted and working again shortly.

Can you share a screen recording of all the steps for me to reproduce this error message on my end?

Responded in email as the thread didn't allow me to upload a video.