Github Copilot / Opus 4.6 Error

[doriuf]

Description

I'm getting "This model does not support assistant message prefill. The conversation must end with a user message." error when using opus 4.6 with copilot.

Plugins

"opencode-gemini-auth@latest"
"@tarquinen/opencode-dcp@latest"

OpenCode version

1.1.52

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[rekram1-node]

How are u triggering it? I cannot replicate

[doriuf]

How are u triggering it? I cannot replicate

Just by sending a normal message

[rekram1-node]

@arfadex can u do opencode export > session.json

And can u show me:

opencode debug config

[doriuf]

@arfadex can u do opencode export > session.json

And can u show me:

opencode debug config

I found the issue! It was caused by this plugin: https://github.com/Opencode-DCP/opencode-dynamic-context-pruning

Everything's working properly now. Do you still need the session.json and opencode debug config output I was going to send you?

[rekram1-node]

no, all good thanks. I will let the maintainer of that plugin that there are issues w/ it

[Tarquinen]

thanks for the link Aiden, this was fixed a few minutes ago, restart your opencode!
https://github.com/Opencode-DCP/opencode-dynamic-context-pruning/releases/tag/v2.0.0