Update utils_app.py

utils_app.py

@@ -4,6 +4,10 @@ from tensorflow import keras
 import tensorflow as tf
 import gradio as gr
 
+
+keras.mixed_precision.set_global_policy("mixed_float16")
+tf.keras.backend.clear_session()
+
 keras_model_list = [
     "kadirnar/dreambooth_diffusion_model_v5",
     "kadirnar/dreambooth_diffusion_model_v3"
@@ -28,8 +32,6 @@ def keras_stable_diffusion(
     width:int,
     ):
         
-    keras.mixed_precision.set_global_policy("mixed_float16")
-
     sd_dreambooth_model = models.StableDiffusion(
         img_width=height, 
         img_height=width