Update app.py

app.py

@@ -25,7 +25,7 @@ xlrd .xlsx .Element_has_iter =True #line:26
 def remove_non_printable(value):
     if isinstance(value, str):
         #return re.sub(r'[^\x20-\x7E\n\t\xa0]|(?<=\w)\n|(?<=\w)\t', '', value)
-        return re.sub(r'[\x00-\x1F\x7F-\x9F\xa0\n\t]+', ' ', value)
+        return re.sub(r'[\x00-\x1F\x7F-\x9F\xa0\n\t\s]+', ' ', value)
     return value
     
 async def faq ():#line:28