Fix readme error reporting (#1533)

Author: illicitonion

common-theme/layouts/partials/block/readme.html

@@ -8,9 +8,11 @@
   {{ errorf "Couldn't find readme at %s" $blockData.api }}
 {{ end }}
 
+{{ $pageTitle := .Page.Title }}
+
 {{ with $response }}
   {{ with .Err }}
-    {{ errorf "Failed %s on %s. Error: %s" $blockData.api .Page.Title .Err }}
+    {{ errorf "Failed %s on %s. Error: %s" $blockData.api $pageTitle . }}
   {{ end }}
 
   {{ $response := .Content | unmarshal }}