Removed unused import, add dcc dependency

app.py

@@ -1,5 +1,4 @@
 from dash import Dash, html, dcc, callback, Output, Input, dash_table
-import plotly.express as px
 import polars as pl
 import dash_bootstrap_components as dbc
 

pyproject.toml

@@ -9,7 +9,8 @@ authors = [
 dependencies = [
     "dash",
     "polars",
-    "gunicorn"
+    "gunicorn",
+    "dash-bootstrap-components"
 ]
 
 [project.optional-dependencies]