Fix ModuleNotFoundError

✅ Solution

The "ModuleNotFoundError: No module named 'vllm._C'" error usually indicates that the vllm package wasn't compiled correctly during installation. To fix it, reinstall vllm from source ensuring you have a compatible CUDA toolkit and compiler (e.g., `pip install --no-cache-dir --force-reinstall .` if you're in the vllm directory or using `pip install --no-cache-dir --force-reinstall vllm`). Verify that the compilation process completes without errors related to CUDA or ninja before proceeding.