fix, 3

src/ntp_routes.py

@@ -1,4 +1,4 @@
-from flask import Flask, session, g, render_template_string
+from flask import Flask, session, g, render_template_string, Response
 from loguru import logger
 import json
 import plotly.express as px
@@ -8,6 +8,7 @@ import pandas as pd
 import psycopg
 import sqlalchemy
 import time
+import io
 
 from app import app
 from app import oidc
@@ -119,8 +120,6 @@ def ntpserver():
             dbh.close()
 
 
-def get_dataframe():
-
 @app.route('/plot.png')
 def plot_png():
     dbh = psycopg.connect()