Update app.py

app.py

@@ -235,9 +235,9 @@ def summarize(inp,history,data=None,file=None,url=None,pdf_url=None):
     history = [(inp,"Working on it...")] 
     yield "",history
     if pdf_url.startswith("http"):
-        out = read_pdf_online(url)
+        out = read_pdf_online(pdf_url)
         data=out
-    if url != "":
+    if url.startswith("http"):
         val, out = find_all(url)
         if not val:
             data="Error"