Fix hook identifier case and improve error logging format in CustomVarsRetrieverHook

Author: oskarnrk

library/Icingadb/Hook/CustomVarsRetrieverHook.php

@@ -15,7 +15,7 @@ final public static function getCustomVarColumns(Model $model): array
     {
         $columns = [];
 
-        $hooks = Hook::all('Icingadb/CustomVarsRetriever');
+        $hooks = Hook::all('icingadb/CustomVarsRetriever');
         foreach ($hooks as $hook) {
             try {
                 $customVars = $hook->retrieveCustomVars($model);
@@ -24,8 +24,9 @@ final public static function getCustomVarColumns(Model $model): array
                 }
             } catch (Throwable $e) {
                 Logger::error(
-                    'Error retrieving Custom Vars for %s: %s',
-                    $object,
+                    'Error retrieving Custom Vars for %s with table name "%s": %s',
+                    get_class($model),
+                    $model->getTableName(),
                     $e->getMessage()
                 );
             }