CLI Failure: Unexpected Runtime Termination

Bug Description
Hello Claude Support Team,
I hope this message finds you well.
I'm experiencing significant issues with Claude Code that have made it mostly unusable for the past two days. Today, it has completely stopped working - it fails to run for no apparent reason, which aligns with similar reports I've seen from other users.
Impact on my work:

I woke up early both yesterday morning and today specifically to make progress on my project
Yesterday, Claude Opus was completely unusable, resulting in wasted time and subscription costs
This has severely disrupted my project timeline and productivity

I've attempted the following troubleshooting steps:

Tried different versions of Claude Code
Rolled back to version 53
Despite these attempts, the issue persists

This is significantly impacting my workflow and causing both time and financial losses. I would greatly appreciate your urgent assistance in resolving this issue.
Could you please investigate why Claude Opus has been unusable and provide guidance on how to fix this problem?
Would you kindly respond to this please? I really need to get back to work on my project.
Thank you for your time and support.

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 1.0.53
• Feedback ID: 1cc6ffa8-f2af-4bc7-b722-2cbff2c88608

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 AI (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:728:6320)\n    at file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:640:16554\n    at Q (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:542:14406)\n    at MF (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:640:14339)\n    at zX (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:640:13205)\n    at MB (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:640:19174)","timestamp":"2025-07-17T04:53:30.985Z"},{"error":"Error: 1: ENOENT \n    at Lq6 (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1208:5219)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async qq6 (file:///Users/hebertg/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1208:2582)","timestamp":"2025-07-17T04:53:32.265Z"}]