Update app.py

app.py

@@ -107,7 +107,7 @@ def predict(prompt, guidance, steps, seed=1231231):
     safe_date_time = datetime.now(central).strftime("%m%d_%H%M")
     replaced_prompt = prompt.replace(" ", "_").replace("\n", "_")
     safe_prompt = "".join(x for x in replaced_prompt if x.isalnum() or x == "_")[:90]
-    filename = f{safe_date_time}_{safe_prompt}.{file_type}"
+    filename = f"{safe_date_time}_{safe_prompt}.png"
     
 
     # Save the image