Update app.py

app.py

@@ -44,7 +44,7 @@ if st.button("Generate"):
                 bar = st.progress(0)
                 bild.empty()
                 c.write(sdf.chat(prompt)) 
-                if os.path.isfile(./exports/charts/temp_chart.png'):
+                if os.path.isfile('./exports/charts/temp_chart.png'):
                     bild.write(st.image('./exports/charts/temp_chart.png',caption=None))
                 #st.write(sdf.chat(prompt))            
                 bar.progress(100)