From 54da71cc0afcda0ddbf3444aa16cba04531145a8 Mon Sep 17 00:00:00 2001
From: Deepankar Mahapatro <deepankar.mahapatro@jina.ai>
Date: Tue, 16 May 2023 13:34:34 +0530
Subject: [PATCH] build: make langchain-serve optional

---
 src/backend/langflow/__main__.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/backend/langflow/__main__.py b/src/backend/langflow/__main__.py
index bed6ad435..685c9cbe0 100644
--- a/src/backend/langflow/__main__.py
+++ b/src/backend/langflow/__main__.py
@@ -75,10 +75,18 @@ def jcloud():
     Deploy Langflow server on Jina AI Cloud
     """
     import asyncio
+    from importlib.metadata import version as mod_version
 
     import click
-    from lcserve.__main__ import serve_on_jcloud
-    from importlib.metadata import version as mod_version
+
+    try:
+        from lcserve.__main__ import serve_on_jcloud
+    except ImportError:
+        click.secho(
+            "🚨 Please install langchain-serve to deploy Langflow server on Jina AI Cloud using `pip install langchain-serve`",
+            fg="red",
+        )
+        return
 
     app_name = "langflow.lcserve:app"
     app_dir = str(Path(__file__).parent)