Update app.py

app.py

@@ -2,7 +2,7 @@ import os
 os.system('/usr/local/bin/python -m pip install --upgrade pip')
 os.system("pip install opencv-python")
 os.system("pip install gradio --upgrade")
-os.system("pip install gradio[eventjs] --upgrade")
+os.system("pip install numpy")
 
 import gradio as gr
 import cv2