GitHub App Installation Blocked: Unexpected ANTHROPIC_API_KEY Secret Conflict

Bug Description
I have successfully installed Claude Code in one of my Github repositories using /install-github-app. Except when I go to install it to my second repository using the same /install-github-app it unexpectedly informs me that -
_"ANTHROPIC_API_KEY already exists in repository secrets!"_ and automatically skips to _"Create a new secret with a different name"_
There main issue here is -

1. I don't have an ANTHROPIC_API_KEY secret in my repository (Confirmed via gh secret list --repo username/repo | grep ANTHROPIC_API_KEY)
2. Even if it thinks so, it doesn't even allow me to select the option _"Use the existing API key"_ (Probably skips this option because of 1)

I am not sure how to resolve this. I am stuck in a loop. And I can access the value of my ANTHROPIC_API_KEY or create a new API Key from API Console since the "Claude Code" Workspace doesn't allow it.

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 1.0.35
• Feedback ID: 3402973b-2fc3-45b0-94c7-b91b0685ae9a

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at TZ (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:700:3921)\n    at file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:9014\n    at Q (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:17199)\n    at VX (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:8160)\n    at nS (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:7241)\n    at f9 (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:11408)","timestamp":"2025-06-30T19:35:51.756Z"},{"error":"Error: 1: ENOENT \n    at ux6 (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1325:4797)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async mx6 (file:///Users/work/.nvm/versions/node/v23.9.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1325:2578)","timestamp":"2025-06-30T19:35:54.024Z"}]

Claude CLI Diagnostic
 Currently running: npm-global (1.0.35)
 Path: /Users/work/.nvm/versions/node/v23.9.0/bin/node
 Invoked: /Users/work/.nvm/versions/node/v23.9.0/bin/claude
 Auto-updates: No
 Config install method: unknown
 Config auto-updates: true
 Update permissions: Yes
 Recommendation: Run '/migrate-installer' to enable auto-updates
 This migrates to a local installation in ~/.claude/local