X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/438b8fed35ea5d250b826e9d6bd9d21f51ffb9d2..9058dabf1a7dc2623747a8e0eb5452e89c02c5ba:/lib-lua/flex-base.lua

diff --git a/lib-lua/flex-base.lua b/lib-lua/flex-base.lua
index 9f9fda86..1173c53f 100644
--- a/lib-lua/flex-base.lua
+++ b/lib-lua/flex-base.lua
@@ -4,6 +4,10 @@ local flex = require('themes/nominatim/init')
 function flex.load_topic(name, cfg)
     local topic_file = debug.getinfo(1, "S").source:sub(2):match("(.*/)") .. 'themes/nominatim/topics/'.. name .. '.lua'
 
+    if topic_file == nil then
+        error('Cannot find topic: ' .. name)
+    end
+
     loadfile(topic_file)(nil, flex, cfg or {})
 end