Update app.py

app.py

@@ -89,7 +89,7 @@ if uploaded_files:
     st.markdown("analyse")
     qq = st.selectbox("QQplot", df.columns)
     if qq:
-        grouped = df.groupby('team')[qq].mean()
+        grouped = df.groupby('team')[[qq]].mean()
         fig, ax = plt.subplots(figsize=(3, 3))
         sm.qqplot(grouped[qq], line='45', ax=ax)
         plt.title("QQ Plot")