Update app.py

app.py

@@ -17,9 +17,12 @@ def run_pickleface():
             text=True
         )
         print(result.stdout)
+        if result.returncode != 0:
+            st.error(f"Error creating face detection results: {result.stderr}")
+            return False
         return True
     except subprocess.CalledProcessError as e:
-        print(f"Error running pickleface.py: {e.stderr}")
+        st.error(f"Critical error running pickleface.py: {e.stderr}")
         return False
 
 def initialize_face_detection_results():