Improve error handling for requests with unloaded LoRA path(s) (#7642)

python/sglang/srt/server_args.py

@@ -20,7 +20,7 @@ import logging
 import os
 import random
 import tempfile
-from typing import List, Literal, Optional
+from typing import List, Literal, Optional, Union
 
 from sglang.srt.hf_transformers_utils import check_gguf_file, get_config
 from sglang.srt.reasoning_parser import ReasoningParser
@@ -131,7 +131,7 @@ class ServerArgs:
     preferred_sampling_params: Optional[str] = None
 
     # LoRA
-    lora_paths: Optional[List[str]] = None
+    lora_paths: Optional[Union[dict[str, str], List[str]]] = None
     max_loras_per_batch: int = 8
     lora_backend: str = "triton"