Fix NotImplementedError

✅ Solution

The "NotImplementedError" in vllm usually arises when a requested feature or optimization (like a specific attention implementation or quantization method) hasn't been fully implemented for the current hardware or architecture. To fix it, either choose a supported configuration (different quantization, attention mechanism, or hardware), or implement the missing functionality within the vllm codebase, potentially requiring modifications to attention kernels or quantization routines for the targeted architecture.