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claude-code - 💡(How to fix) Fix [BUG] ultraplan 404 preventing the session from starting [1 comments, 1 participants]

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anthropics/claude-code#45171•Fetched 2026-04-09 08:11:38
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jdesrochersjdesrochers
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Error Message

File a bug report at github.com/anthropics/claude-code/issues with:

Claude Code version: 2.1.96 Error: Bundle upload failed: status 404 after 3 attempts Steps: installed GitHub App, ran /web-setup, fresh session, still fails Repo: private repo under personal account (jdesrochers/web-apps)

Code Example

session creation failed — Bundle upload failed: status 404 after 3 attempts. Please setup GitHub on https://claude.ai/code. See --debug for details.

---

File a bug report at github.com/anthropics/claude-code/issues with:

Claude Code version: 2.1.96
Error: Bundle upload failed: status 404 after 3 attempts
Steps: installed GitHub App, ran /web-setup, fresh session, still fails
Repo: private repo under personal account (jdesrochers/web-apps)

---

Details in the bug.  Here is the error

session creation failed — Bundle upload failed: status 404 after 3 attempts. Please setup GitHub on https://claude.ai/code. See --debug for details.
RAW_BUFFERClick to expand / collapse

Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

ultraplan is giving the following error when using 2.1.96 (Claude Code)

session creation failed — Bundle upload failed: status 404 after 3 attempts. Please setup GitHub on https://claude.ai/code. See --debug for details.

Using --debug did not provide any additional information other than the same error shown above I asked claude code to help me figure out the issue and it walked me through all of the necessary steps

  • web-setup is working and gh is configured properly
  • https://claude.ai/code loads as expected in the web-setup and we can see the repo that we are doing work in
  • we verified that the Claude is installed in github
  • we verified that my claude subscription is Pro which should have access to ultraplan usage
  • Claude suggested that I open this bug saying this
File a bug report at github.com/anthropics/claude-code/issues with:

Claude Code version: 2.1.96
Error: Bundle upload failed: status 404 after 3 attempts
Steps: installed GitHub App, ran /web-setup, fresh session, still fails
Repo: private repo under personal account (jdesrochers/web-apps)

After the error happens the claude session goes into regular plan mode which is not what I want. Really want to try out the new ultraplan for my project

IMPORTANT NOTE: the repo that I am trying to use is a personal "private" repo. Claude did not indicate this would be a problem. The fact that I can see the repo when in https://claude.ai/code tells me this should not be related but I wanted to mention this just in case

What Should Happen?

ultraplan should work

Error Messages/Logs

Details in the bug.  Here is the error

session creation failed — Bundle upload failed: status 404 after 3 attempts. Please setup GitHub on https://claude.ai/code. See --debug for details.

Steps to Reproduce

  1. Run claude --debug
  2. Run /ultraplan <prompt> NOTE: I am pasting in the contents for the prompt that I wrote out first. However, I also tried just typing a simple prompt and the same thing happens but wanted to provide the additional context

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

Claude Code v2.1.96

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue with ultraplan in Claude Code version 2.1.96 may be related to the private repository setup or GitHub configuration, and verifying the repository permissions and Claude AI configuration could help resolve the "Bundle upload failed: status 404" error.

Guidance

  1. Verify GitHub repository permissions: Ensure that the Claude GitHub App has the necessary permissions to access the private repository, especially since the error occurs with a private repo.
  2. Check Claude AI configuration: Confirm that the Claude AI setup on https://claude.ai/code is correctly configured for the private repository, as the fact that the repo is visible on the website suggests it should work.
  3. Review Claude subscription and ultraplan access: Although the user has a Pro subscription, which should include ultraplan access, double-checking the subscription details and ensuring that ultraplan is indeed available for private repositories might be necessary.
  4. Test with a public repository: If possible, try using ultraplan with a public repository to see if the issue is specific to private repositories, which could help isolate the problem.

Notes

The provided information does not include specific details about the repository settings or the exact configuration of the Claude AI and GitHub integration, which could be crucial for resolving the issue. The fact that the error message suggests setting up GitHub on https://claude.ai/code, despite the user confirming it's already set up, indicates a potential misconfiguration or permission issue.

Recommendation

Apply workaround: Given the uncertainty around the cause, trying the steps outlined in the guidance section, particularly verifying permissions and configurations, seems like the most straightforward approach to potentially resolve or mitigate the issue without waiting for a potential fix in a future version.

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