From f0ea697e9ebed567cebdf09ff6ae55a21d1106c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=ADnez=20Ruiz?= <d.martinez@zaleos.net>
Date: Fri, 6 Aug 2021 10:43:16 +0200
Subject: [PATCH] Throw an exception if the filter is not found

---
 src/filters.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/filters.cpp b/src/filters.cpp
index 3bb1d79e..8556339b 100644
--- a/src/filters.cpp
+++ b/src/filters.cpp
@@ -1061,7 +1061,7 @@ InternalValue UserDefinedFilter::Filter(const InternalValue& baseVal, RenderCont
     bool filterFound = false;
     auto filterValPtr = context.FindValue(m_filterName, filterFound);
     if (!filterFound)
-        return InternalValue();
+        throw std::runtime_error("Can't find filter '" + m_filterName + "'");
 
     const Callable* callable = GetIf<Callable>(&filterValPtr->second);
     if (callable == nullptr || callable->GetKind() != Callable::UserCallable)