runtime error

Exit code: 1. Reason: ╔══════════════════════════════════════════════════════════════╗ ║ ChessEcon — Multi-Agent Chess RL ║ ║ TextArena + Meta OpenEnv + GRPO | Hackathon 2026 ║ ╚══════════════════════════════════════════════════════════════╝ Mode: backend Model: Qwen/Qwen2.5-0.5B-Instruct RL Method: grpo ERROR: Required environment variable ANTHROPIC_API_KEY is not set. Please set it in your .env file or Docker environment.

Container logs: