core/modules/rest/src/Routing/ResourceRoutes.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/modules/rest/src/Routing/ResourceRoutes.php b/core/modules/rest/src/Routing/ResourceRoutes.php
index f9cb648..45eda01 100644
--- a/core/modules/rest/src/Routing/ResourceRoutes.php
+++ b/core/modules/rest/src/Routing/ResourceRoutes.php
@@ -73,7 +73,7 @@ protected function alterRoutes(RouteCollection $collection) {
     $resources = $this->config->get('rest.settings')->get('resources') ?: array();
     $enabled_resources = array_intersect_key($resources, $this->manager->getDefinitions());
     if (count($resources) != count($enabled_resources)) {
-      trigger_error('rest.settings lists resources relying on missing plugins.');
+      trigger_error('rest.settings lists resources relying on the following missing plugins: ' . implode(', ', array_keys(array_diff_key($resources, $enabled_resources))));
     }
 
     // Iterate over all enabled resource plugins.