From e8998e0fab52ea825596a741f2650ad8e1e95d72 Mon Sep 17 00:00:00 2001
From: cheapie <no-email-for-you@example.com>
Date: Thu, 6 Jan 2022 09:26:22 -0600
Subject: Avoid crashing on a nil error message

---
 mesecons_luacontroller/init.lua | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 500bbbd..4b7d43b 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -827,6 +827,7 @@ local function run(pos, event)
 	local code = meta:get_string("code")
 	local ok, errmsg = run_inner(pos, code, event)
 	if not ok then
+		if not errmsg then errmsg = "(unknown error)" end
 		terminal_write(pos,"[ERROR] "..errmsg)
 		reset_meta(pos, code, errmsg)
 	else
-- 
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