From c5e1ddea20d4763f0a99aee94a73094bed3e3315 Mon Sep 17 00:00:00 2001
From: Veiko Aasa <veiko.aasa@nlib.ee>
Date: Sat, 20 Oct 2018 13:54:04 +0300
Subject: [PATCH] Fixes #1998

---
 gluon/widget.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gluon/widget.py b/gluon/widget.py
index fbd522ae..73836bc7 100644
--- a/gluon/widget.py
+++ b/gluon/widget.py
@@ -1294,11 +1294,11 @@ end tell
                         if lineno == i + 1:
                             break
                     else:
-                        line = None
+                        line = ''
                 finally:
                     f.close()
             except (IOError, OSError):
-                line = None
+                line = ''
         return line
     linecache.getline = getline