From 06b31f51ebd619c58484fe09a25e18d6727dfb27 Mon Sep 17 00:00:00 2001
From: Quentin Fuxa <quentin.fuxa@gmail.com>
Date: Thu, 30 Oct 2025 23:30:19 +0100
Subject: [PATCH] exception when translation and no nllw

---
 whisperlivekit/core.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/whisperlivekit/core.py b/whisperlivekit/core.py
index f5a4173..d25bb86 100644
--- a/whisperlivekit/core.py
+++ b/whisperlivekit/core.py
@@ -141,7 +141,10 @@ class TranscriptionEngine:
             if self.args.lan == 'auto' and self.args.backend != "simulstreaming":
                 raise Exception('Translation cannot be set with language auto when transcription backend is not simulstreaming')
             else:
-                from nllw import load_model
+                try:
+                    from nllw import load_model
+                except:
+                    raise Exception('To use translation, you must install nllw: `pip install nllw`')
                 translation_params = { 
                     "nllb_backend": "transformers",
                     "nllb_size": "600M"