adding default value for variance

app.py

@@ -39,7 +39,7 @@ def gen_save_folder(max_size=200):
 
     return new_folder
 
-def handle_text_prompt(input_prompt, variance):
+def handle_text_prompt(input_prompt, variance = 0):
     print(f"prompt: {input_prompt}, variance: {variance}")
     top_p = None if variance == 0 else (100 - variance) / 100.0
     mesh_v_f = GLOBAL_STATE["engine_fast"].t2s([input_prompt], use_kv_cache=True, resolution_base=8.0, top_p=top_p)