.

app.py

@@ -222,7 +222,9 @@ def pluck_img(user_id, user_emb):
 
 
 def background_next_image():
-        global prevs_df
+    global prevs_df
+    global is_started
+    while True:
         # only let it get N (maybe 3) ahead of the user
         #not_rated_rows = prevs_df[[i[1]['user:rating'] == {' ': ' '} for i in prevs_df.iterrows()]]
         rated_rows = prevs_df[[i[1]['user:rating'] != {' ': ' '} for i in prevs_df.iterrows()]]
@@ -245,7 +247,7 @@ def background_next_image():
 
             # we pop previous ratings if there are > 10
             if len(rated_from_user) >= 10:
-                oldest = unrated_from_user.iloc[-1]['paths']
+                oldest = rated_from_user.iloc[0]['paths']
                 prevs_df = prevs_df[prevs_df['paths'] != oldest]
             # we don't compute more after 10 are in the queue for them
             if len(unrated_from_user) >= 10:
@@ -320,8 +322,11 @@ def next_image(calibrate_prompts, user_id):
 
 
 def start(_, calibrate_prompts, user_id, request: gr.Request):
+    global is_started
     user_id = int(str(time.time())[-7:].replace('.', ''))
     image, calibrate_prompts = next_image(calibrate_prompts, user_id)
+    if not is_started:
+        background_next_image()
     return [
             gr.Button(value='Like (L)', interactive=True), 
             gr.Button(value='Neither (Space)', interactive=True, visible=False), 
@@ -479,9 +484,9 @@ Explore the latent space without text prompts based on your preferences. Learn m
 log = logging.getLogger('log_here')
 log.setLevel(logging.ERROR)
 
-scheduler = BackgroundScheduler()
-scheduler.add_job(func=background_next_image, trigger="interval", seconds=.1)
-scheduler.start()
+#scheduler = BackgroundScheduler()
+#scheduler.add_job(func=background_next_image, trigger="interval", seconds=.1)
+#scheduler.start()
 
 #thread = threading.Thread(target=background_next_image,)
 #thread.start()