Update app.py

app.py

@@ -71,6 +71,11 @@ def infer(prompt,negative_prompt,seed,resolution, steps):
         except:
             generator=None
 
+    try:
+        steps=int(steps)
+    except:
+        raise Exception('Steps must be an integer')
+
     w,h = resolution.split()
     w,h = int(w),int(h)
     image = pipe(prompt,num_inference_steps=steps, negative_prompt=negative_prompt,generator=generator,width=w,height=h).images[0]