Update app.py

app.py

@@ -93,6 +93,8 @@ glob_idx = 0
 def next_image(embs, ys, calibrate_prompts):
     global glob_idx
     glob_idx = glob_idx + 1
+    if glob_idx >= 12:
+        glob_idx = 0
 
     # handle case where every instance of calibration prompts is 'Neither' or 'Like' or 'Dislike'
     if len(calibrate_prompts) == 0 and len(list(set(ys))) <= 1: