update app.py

app.py

@@ -34,6 +34,7 @@ from egogpt.constants import (
     DEFAULT_SPEECH_TOKEN
 )
 from egogpt.conversation import conv_templates, SeparatorStyle
+import subprocess
 subprocess.run('pip install flash-attn --no-build-isolation', env={'FLASH_ATTENTION_SKIP_CUDA_BUILD': "TRUE"}, shell=True)
 
 # pretrained = "/mnt/sfs-common/jkyang/EgoGPT/checkpoints/EgoGPT-llavaov-7b-EgoIT-109k-release"