Update app.py

app.py

@@ -14,7 +14,7 @@ import scipy as sc
 os.environ["KERAS_BACKEND"] = "torch"
 	
 import keras
-
+import keras.saving
 
 model_adresses = {"Intestinal organoids (0.32x0.32x2.0 um)": './model_positions',
                   "c. Elegans embryo (0.1x0.1x1.0 um)": './model_positions'}