Update app.py

app.py

@@ -206,7 +206,12 @@ datadefault = [
     {"value": "L1508", "label": "L1508"},
     {"value": "L1509", "label": "L1509"},
 ]
-app = Dash(server=server, external_stylesheets=dmc.styles.ALL)
+def custom_error_handler(err):
+# This function defines what we want to happen when an exception occurs
+# For now, we just print the exception to the terminal with additional text
+    print(f"The app raised the following exception: {err}")
+
+app = Dash(server=server, external_stylesheets=dmc.styles.ALL, on_error=custom_error_handler)
 
 app.layout = dmc.MantineProvider(
     [