From 9da099717b78a501d85c5548607e123cb49ec76f Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Sun, 13 Nov 2016 19:36:50 +0100
Subject: [PATCH] Cast toJson to string in case it returns false, fixes #878

---
 src/Monolog/Formatter/LineFormatter.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Monolog/Formatter/LineFormatter.php b/src/Monolog/Formatter/LineFormatter.php
index a9e4a415..cfffb267 100644
--- a/src/Monolog/Formatter/LineFormatter.php
+++ b/src/Monolog/Formatter/LineFormatter.php
@@ -146,7 +146,7 @@ class LineFormatter extends NormalizerFormatter
             return (string) $data;
         }
 
-        return $this->toJson($data, true);
+        return (string) $this->toJson($data, true);
     }
 
     protected function replaceNewlines(string $str): string