diff --git a/flowsettings.py b/flowsettings.py
index 8eaba8b..4e6b14a 100644
--- a/flowsettings.py
+++ b/flowsettings.py
@@ -15,14 +15,14 @@ this_dir = Path(this_file).parent
 # change this if your app use a different name
 KH_PACKAGE_NAME = "kotaemon_app"
 
-KH_APP_VERSION = config("KH_APP_VERSION", "local")
+KH_APP_VERSION = config("KH_APP_VERSION", None)
 if not KH_APP_VERSION:
     try:
         # Caution: This might produce the wrong version
         # https://stackoverflow.com/a/59533071
         KH_APP_VERSION = version(KH_PACKAGE_NAME)
-    except Exception as e:
-        print(f"Failed to get app version: {e}")
+    except Exception:
+        KH_APP_VERSION = "local"
 
 # App can be ran from anywhere and it's not trivial to decide where to store app data.
 # So let's use the same directory as the flowsetting.py file.
diff --git a/libs/ktem/ktem/assets/__init__.py b/libs/ktem/ktem/assets/__init__.py
index 8c0df2a..fd10eac 100644
--- a/libs/ktem/ktem/assets/__init__.py
+++ b/libs/ktem/ktem/assets/__init__.py
@@ -3,4 +3,6 @@ from pathlib import Path
 from decouple import config
 
 PDFJS_VERSION_DIST: str = config("PDFJS_VERSION_DIST", "pdfjs-4.0.379-dist")
-PDFJS_PREBUILT_DIR: Path = Path(__file__).parent / "prebuilt" / PDFJS_VERSION_DIST
+PDFJS_PREBUILT_DIR: Path = config(
+    "PDFJS_PREBUILT_DIR", Path(__file__).parent / "prebuilt" / PDFJS_VERSION_DIST
+)
diff --git a/scripts/run_linux.sh b/scripts/run_linux.sh
index ec2f960..60528ab 100755
--- a/scripts/run_linux.sh
+++ b/scripts/run_linux.sh
@@ -170,7 +170,8 @@ function download_and_unzip() {
 }
 
 function launch_ui() {
-    python $(pwd)/app.py || {
+    local pdfjs_prebuilt_dir=$1
+    PDFJS_PREBUILT_DIR="$pdfjs_prebuilt_dir" python $(pwd)/app.py || {
         echo "" && echo "Will exit now..."
         exit 1
     }
@@ -217,7 +218,7 @@ print_highlight "Setting up a local model"
 setup_local_model
 
 print_highlight "Launching Kotaemon in your browser, please wait..."
-launch_ui
+launch_ui $target_pdf_js_dir
 
 deactivate_conda_env
 
diff --git a/scripts/run_macos.sh b/scripts/run_macos.sh
index 5ba335b..6066fff 100755
--- a/scripts/run_macos.sh
+++ b/scripts/run_macos.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# Functions for better code organization
+# functions for better code organization
 function check_path_for_spaces() {
     if [[ $PWD =~ \  ]]; then
         echo "The current workdir has whitespace which can lead to unintended behaviour. Please modify your path and continue later."
@@ -171,7 +171,8 @@ function download_and_unzip() {
 }
 
 function launch_ui() {
-    python $(pwd)/app.py || {
+    local pdfjs_prebuilt_dir=$1
+    PDFJS_PREBUILT_DIR="$pdfjs_prebuilt_dir" python $(pwd)/app.py || {
         echo "" && echo "Will exit now..."
         exit 1
     }
@@ -221,7 +222,7 @@ print_highlight "Setting up a local model"
 setup_local_model
 
 print_highlight "Launching Kotaemon in your browser, please wait..."
-launch_ui
+launch_ui $target_pdf_js_dir
 
 deactivate_conda_env