[gRPC] Preserve original ImportError in grpc_server.py (#21801)

Signed-off-by: Chang Su <chang.s.su@oracle.com>
2026-03-31 18:22:29 -07:00
parent 6a9b09847c
commit 1389962f06
1 changed files with 5 additions and 3 deletions
@@ -7,9 +7,11 @@ async def serve_grpc(server_args, model_info=None):
    """Start the standalone gRPC server with integrated scheduler."""
    try:
        from smg_grpc_servicer.sglang.server import serve_grpc as _serve_grpc
-    except ImportError:
+    except ImportError as e:
        raise ImportError(
            "gRPC mode requires the smg-grpc-servicer package. "
-            "Install it with: pip install smg-grpc-servicer[sglang]"
-        ) from None
+            "If not installed, run: pip install smg-grpc-servicer[sglang]. "
+            "If already installed, there may be a broken import due to a "
+            "version mismatch — see the chained exception above for details."
+        ) from e
    await _serve_grpc(server_args, model_info)