.../src/Plugin/migrate/process/MigrationLookup.php    | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
index 83f4659816..bc9865df4c 100644
--- a/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
@@ -230,15 +230,16 @@ public function transform($value, MigrateExecutableInterface $migrate_executable
         $stub_migration = reset($lookup_migration_ids);
       }
 
-      $exists_in_source = (bool) \Drupal::service('plugin.manager.migration')->createInstance($stub_migration)
-        ->getSourcePlugin()
-        ->query()
-        ->condition($this->configuration['source'], $value[0])
-        ->countQuery()
-        ->execute()
-        ->fetchField();
-      if (!$exists_in_source) {
-        return $value;
+      $source_plugin = \Drupal::service('plugin.manager.migration')->createInstance($stub_migration)->getSourcePlugin();
+      if (method_exists($source_plugin, 'query')) {
+        $exists_in_source = (bool) $source_plugin->query()
+          ->condition($this->configuration['source'], $value[0])
+          ->countQuery()
+          ->execute()
+          ->fetchField();
+        if (!$exists_in_source) {
+          return $value;
+        }
       }
 
       // Rethrow any exception as a MigrateException so the executable can shut