Update app.py

app.py

@@ -92,7 +92,7 @@ def compute_cosine_heatmap(seq):
         "polar": "indigo",
         "other": "steelblue"
     }
-    row_colors = [class_colors[c] for c in residues_classes]
+    row_colors = [class_colors[c] for c in residue_classes]
 
     #--plot heatmap
     fig, ax = plt.subplots(figsize=(8, 6))