From 225990798f6dbbf8a846a9745b8fac124598f78a Mon Sep 17 00:00:00 2001
From: Andrew Thompson <andrew@hijacked.us>
Date: Sat, 9 Feb 2019 10:50:59 -0800
Subject: [PATCH] Fix

---
 src/lager_logger_formatter.erl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lager_logger_formatter.erl b/src/lager_logger_formatter.erl
index 577b954..5503526 100644
--- a/src/lager_logger_formatter.erl
+++ b/src/lager_logger_formatter.erl
@@ -87,8 +87,10 @@ format(#{msg := {report, _Report}, meta := Metadata} = Event, #{report_cb := Fun
     format(Event#{meta => Metadata#{report_cb => Fun}}, maps:remove(report_cb, Config));
 format(#{level := _Level, msg := {report, Report}, meta := #{report_cb := Fun}} = Event, Config) when is_function(Fun, 1) ->
     case Fun(Report) of
+        {"", []} -> "";
         {Format, Args} when is_list(Format), is_list(Args) ->
             format(Event#{msg => {Format, Args}}, Config);
+        "" -> "";
         String ->
             format(Event#{msg => {string, String}}, Config)
     end;