HTTP 500 Internal Server Error

Google Antigravity
,
1

I am encountering a persistent HTTP 500 Internal Server Error when sending prompts through Antigravity.
Mode planning, model Gemini 3 Flash.
The AI chat isn’t working at all. It’s not just a problem with a single prompt.
Error:

Trajectory ID: 5a66927b-f18f-4eb9-b810-bb7943743d19
Error: HTTP 500 Internal Server Error
Sherlog:
TraceID: 0xaac2fd5dcb527c0
Headers: {“Alt-Svc”:[“h3=“:443”; ma=2592000,h3-29=“:443”; ma=2592000”],“Content-Length”:[“109”],“Content-Type”:[“text/event-stream”],“Date”:[“Mon, 16 Mar 2026 08:24:14 GMT”],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=471”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:[“aac2fd5dcb527c0”],“X-Content-Type-Options”:[“nosniff”],“X-Frame-Options”:[“SAMEORIGIN”],“X-Xss-Protection”:[“0”]}

{
“error”: {
“code”: 500,
“message”: “Internal error encountered.”,
“status”: “INTERNAL”
}
}
I also tried clearing the cache files and similar steps, and restarting Antigravity, but to no avail.

Workspace PRO user: petr.svoboda@koha-v-knihovne.cz

Steps to Reproduce:
I ask “Are you work”? and get this error message.

Software and hardware:
Antigravity Version: 1.20.5
VSCode OSS Version: 1.107.0
Commit: 4603c2a412f8c7cca552ff00db91c3ee787016ff
Date: 2026-03-07T01:34:20.929Z (1 wk ago)
Electron: 39.2.3
Chromium: 142.0.7444.175
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Darwin arm64 25.3.0
Language Server CL: 879885162

2

I logged out, and when I try to log in, Antigravity displays the following message:**

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