diff --git a/exampleSite/config/_default/params.toml b/exampleSite/config/_default/params.toml
index 448e15b47e..82770c4128 100644
--- a/exampleSite/config/_default/params.toml
+++ b/exampleSite/config/_default/params.toml
@@ -309,7 +309,7 @@ highlightWrap = true
 # for the unresolved path. If set to `warning` the same happens and an additional
 # warning is printed. If set to `error` an error message is printed and the build
 # is aborted.
-include.errorlevel = "warning"
+include.errorlevel = "error"
 
 #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 # Images
@@ -323,7 +323,7 @@ include.errorlevel = "warning"
 # printed. If set to `error` an error message is printed and the build is
 # aborted.
 # Please note that this can not resolve files inside of your `static` directory.
-image.errorlevel = "warning"
+image.errorlevel = "error"
 
 # Image effects.
 # See the documentation for how you can even add your own arbitrary effects to
@@ -353,7 +353,7 @@ imageEffects.shadow = false
 # aborted.
 # Please note that with Hugo < 0.123.0 + `uglyURLs=true` this can lead to false
 # negatives.
-link.errorlevel = "warning"
+link.errorlevel = "error"
 
 # How to open external links.
 # Default: "_blank"