Agent execution terminated due to unknown error

Getting this consistently for 24+ hours across new chats, model switches, and app restarts. Checked project billing (active, “My First Project”) and quotas (nothing showing >90% usage) — neither appears to be the cause. Trajectory ID: d9eecbec-3ecd-4a77-******
Error: HTTP 429 Too Many Requests
Sherlog:
TraceID: 0x4b88779b********
Headers: {“Alt-Svc”:[“h3=”:443"; ma=2592000,h3-29=“:443”; ma=2592000"],“Content-Length”:[“139”],“Content-Type”:[“text/event-stream”],“Date”:[“Sun, 06 Sep 2026 05:21:58 GMT”],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=462”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:[4b8877*],“X-Content-Type-Options”:[“nosniff”],“X-Frame-Options”:[“SAMEORIGIN”],“X-Xss-Protection”:[“0”]}

{
“error”: {
“code”: 429,
“message”: “Resource has been exhausted (e.g. check quota).”,
“status”: “RESOURCE_EXHAUSTED”
}
}