From 0065fbc25e8d71876e96d221350132fc3acadf40 Mon Sep 17 00:00:00 2001
From: Ralf Becker <RalfBecker@outdoor-training.de>
Date: Fri, 19 Oct 2018 09:33:28 +0200
Subject: [PATCH] fix PHP Warning: A non-numeric value encountered

---
 api/src/Etemplate/Widget.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/api/src/Etemplate/Widget.php b/api/src/Etemplate/Widget.php
index 9dea8f593f..2a6c886844 100644
--- a/api/src/Etemplate/Widget.php
+++ b/api/src/Etemplate/Widget.php
@@ -622,7 +622,7 @@ class Widget
 			}
 			if (!is_numeric($c)) $c = self::chrs2num($c);
 			$col = self::num2chrs($c-1);	// $c-1 to get: 0:'@', 1:'A', ...
-			$col_ = self::num2chrs($c_-1);
+			if (is_numeric($c_)) $col_ = self::num2chrs($c_-1);
 			$row_cont = $cont[$row];
 			$col_row_cont = $cont[$col.$row];