Update app.py

app.py

@@ -4,6 +4,7 @@ os.system('pip install paddlepaddle>=2.0.1')
 # os.system('pip install paddlepaddle==0.0.0 -f https://www.paddlepaddle.org.cn/whl/linux/cpu-mkl/develop.html')
 os.system('pip install paddleocr')
 import gradio as gr
+from numpy import asarray
 from pdf2image import convert_from_path
 from paddleocr import PaddleOCR
 from gradio_pdf import PDF