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opentui: fatal: undefined is not an object (evaluating 'flat().length') #4101

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opentui: fatal: undefined is not an object (evaluating 'flat().length')#4101
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bugSomething isn't workingopentuiThis relates to changes in v1.0, now that opencode uses opentui

Description

@jeromewoody
jeromewoody
opened on Nov 9, 2025

Description

TypeError: undefined is not an object (evaluating 'flat().length')
    at <anonymous> (src/cli/cmd/tui/ui/dialog-select.tsx:49:49)
    at runComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:742:22)
    at updateComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:724:3)
    at readSignal (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:660:67)
    at <anonymous> (src/cli/cmd/tui/ui/dialog-select.tsx:280:16)
    at runComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:742:22)
    at updateComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:724:3)
    at createRenderEffect (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:240:75)
    at <anonymous> (src/cli/cmd/tui/ui/dialog-select.tsx:273:5)
    at untrack (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:475:12)...

OpenCode version

v1.0.46

Steps to reproduce

  1. start opencode
  2. attempt to switch models
  3. observe : UI crashes and returns error stack

Operating System

Mac OS X 26 Taho

Terminal

Warp Client, Terminal.app

Activity

  1. jeromewoody
    added
    bugSomething isn't working
    on Nov 9, 2025

  2. github-actions commented on Nov 9, 2025

    @github-actions
    github-actionsBot
    on Nov 9, 2025 – with GitHub Actions
    Contributor

    This issue might be a duplicate of existing issues. Please check:

    Feel free to ignore if none of these address your specific case.

  3. rekram1-node
    added
    opentuiThis relates to changes in v1.0, now that opencode uses opentui
    on Nov 9, 2025

  4. kennyfrc commented on Nov 9, 2025

    @kennyfrc
    kennyfrc
    on Nov 9, 2025
    Contributor

    I also started getting this today. I was using v1.0.45. I upgraded to v1.0.49, and it still occurs. Yesterday, when using v1.0.45, it did not happen at all. It sounds like an issue in models.dev that happened in the last 12 hours (maybe?)

  5. rekram1-node commented on Nov 9, 2025

    @rekram1-node
    rekram1-node
    on Nov 9, 2025
    Contributor

    @jeromewoody @kennyfrc try upgrading to 1.0.50 I think I fixed this

  6. rekram1-node
    self-assigned this
    on Nov 9, 2025

  7. mwaltzer commented on Nov 9, 2025

    @mwaltzer
    mwaltzer
    on Nov 9, 2025

    I'm on 1.0.50 and still getting this:

    TypeError: undefined is not an object (evaluating 'local.model.parsed().model')
    at <anonymous> (src/cli/cmd/tui/component/prompt/index.tsx:622:47)
    at <anonymous> (../../node_modules/.bun/@opentui+solid@0.0.0-20251108-0c7899b1+1753ef9b65046169/node_modules/@opentui/solid/index.js:140:62)
    at runComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:742:22)
    at updateComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:724:3)
    at createRenderEffect (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:240:75)
    at insert (../../node_modules/.bun/@opentui+solid@0.0.0-20251108-0c7899b1+1753ef9b65046169/node_modules/@opentui/solid/index.js:140:5)
    at <anonymous> (src/cli/cmd/tui/component/prompt/index.tsx:622:5)
    at Prompt (src/cli/cmd/tui/component/prompt/index.tsx:746:12)
    at untrack (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:475:12)
    at runComputation (../../node_modules/.bun/solid-js@1.9.9/node_modules/solid-js/dist/dev.js:742:22)...

  8. rekram1-node commented on Nov 9, 2025

    @rekram1-node
    rekram1-node
    on Nov 9, 2025
    Contributor

    great 😭

  9. thdxr commented on Nov 9, 2025

    @thdxr
    thdxr
    on Nov 9, 2025
    Member

    @somerocketeer are you starting opencode with -m ?

  10. thdxr commented on Nov 9, 2025

    @thdxr
    thdxr
    on Nov 9, 2025
    Member

    see if it's fixed in 1.0.51 - publishing now

  11. the-vampiire commented on Nov 9, 2025

    @the-vampiire
    the-vampiire
    on Nov 9, 2025

    i'm getting a similar error on v1.0.49. no flags, just opencode. i was in a session and opened another tab to start a new one and this happens every time now. interestingly the original session kept working fine until i exited it.

    unable to copy anything, had to screenshot

    Image

  12. the-vampiire commented on Nov 9, 2025

    @the-vampiire
    the-vampiire
    on Nov 9, 2025

    had to uninstall opencode from homebrew and use the installer script to get the latest version 1.0.51. @thdxr new version fixed it for me

    brew uninstall opencode
curl -fsSL https://opencode.ai/install | bash
# source or open new shell session

  13. oafx commented on Nov 9, 2025

    @oafx
    oafx
    on Nov 9, 2025

    works with brew too, 1.0.51 fixed it for me too

  14. rekram1-node
    closed this as completedon Nov 9, 2025

  15. mwaltzer commented on Nov 9, 2025

    @mwaltzer
    mwaltzer
    on Nov 9, 2025

    Seems fixed on 1.0.51, thank you!

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