Update app.py

app.py

@@ -67,7 +67,7 @@ def read_pdf_with_pdfplumber(file):
     all_page_text=" "
     with pdfplumber.open(file) as pdf:
 	    page = pdf.pages[0]
-    img = Image.open(im)
+    img = Image.open(page)
     img = img.save("img.png")
     image_name = cv2.imread("img.png")
 # get co-ordinates to c