[BUG] Error: Unknown protocol set in OTEL_EXPORTER_OTLP_METRICS_PROTOCOL

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: ?
• Operating System: macOs 10.15.5
• Terminal: ghostty
• Node.js v23.11.0

Bug Description

After using Claude today it said that was an upgrade so I quit and restarted Claude, but it fails with:

Error: Unknown protocol set in OTEL_EXPORTER_OTLP_METRICS_PROTOCOL or OTEL_EXPORTER_OTLP_PROTOCOL env var: undefined
    at jT5 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1453:6529)
    at xT5 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1453:7131)
    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1453:7874

Steps to Reproduce

1. Upgrade claude
2. run claude

Expected Behaviour

No crash

Actual Behavior

crash

Additional Context

I tried deleting and reinstalling but got the same issue.