From 268750e3b78a7bdc89ce637f7a4f163fca95c938 Mon Sep 17 00:00:00 2001
From: Evgeny Khramtsov <ekhramtsov@process-one.net>
Date: Tue, 30 Apr 2019 10:31:03 +0300
Subject: [PATCH] Provide a suggestion when unknown request handler is detected

---
 src/ejabberd_http.erl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/ejabberd_http.erl b/src/ejabberd_http.erl
index e37269659..d9e13132e 100644
--- a/src/ejabberd_http.erl
+++ b/src/ejabberd_http.erl
@@ -971,10 +971,13 @@ prepare_request_module(Mod) when is_atom(Mod) ->
 	    Mod;
 	Err ->
 	    ?ERROR_MSG(
-	       "Failed to load request handler ~s: "
+	       "Failed to load request handler ~s, "
+	       "did you mean ~s? Hint: "
 	       "make sure there is no typo and file ~s.beam "
 	       "exists inside either ~s or ~s directory",
-	       [Mod, Mod,
+	       [Mod,
+		misc:best_match(Mod, ejabberd_config:get_modules()),
+		Mod,
 		filename:dirname(code:which(?MODULE)),
 		ext_mod:modules_dir()]),
 	    erlang:error(Err)