Update app.py

app.py

@@ -10,6 +10,7 @@ if not os.path.exists("sd-ggml"):
     os.system("git clone https://huggingface.co/svjack/sd-ggml")
 else:
     shutil.rmtree("sd-ggml")
+    os.system("git clone https://huggingface.co/svjack/sd-ggml")
 assert os.path.exists("sd-ggml")
 os.chdir("sd-ggml")
 assert os.path.exists("stable-diffusion.cpp")
@@ -30,6 +31,7 @@ def process(model_path ,prompt, num_samples, image_resolution, sample_steps, see
         os.mkdir(output_path)
     else:
         shutil.rmtree(output_path)
+        os.mkdir(output_path)
     assert os.path.exists(output_path)
 
     run_format = './bin/sd -m {} --sampling-method "dpm++2mv2" -o "{}/{}.png" -p "{}" --steps {} -H {} -W {}'