Same here, started ~2 hours ago, I’ve tried all the usual stuff (and /clear in chat, reset context etc) but nothing works. Still the same error:
[GoogleGenerativeAI Error]: Error fetching from https://monospace-pa.googleapis.com/v1/models/gemini-2.5-pro-preview-03-25:streamGenerateContent?alt=sse: [500 Internal Server Error] An internal error has occurred. Please retry or report in https://developers.generativeai.google/guide/troubleshooting
We are actively working through remaining issues with this! Great to see that our fixes are working well for some of you, but we hope to resolve this broadly for all users soon.