From 9c6d34ef9e1d5d00a916e976e7f770f9aa2f37e9 Mon Sep 17 00:00:00 2001
From: Alexander O'Neill <aoneill@upei.ca>
Date: Thu, 21 Mar 2019 12:11:38 -0300
Subject: [PATCH] Add check for empty field.

---
 media_attribution.module | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/media_attribution.module b/media_attribution.module
index c87f361..94b483d 100644
--- a/media_attribution.module
+++ b/media_attribution.module
@@ -84,8 +84,9 @@ function media_attribution_modules_installed($modules) {
  */
 function media_attribution_preprocess_entity_embed_container(&$variables) {
 
-  if ($attributions = $variables['element']['#entity']->get('field_image_attribution')
-    ->referencedEntities()) {
+  if ($variables['element']['#entity']->hasField('field_image_attribution')
+      && $attributions = $variables['element']['#entity']->get('field_image_attribution')
+      ->referencedEntities()) {
     $attribution = $attributions[0];
     $author = $attribution->get('field_attribution_author')->getValue()[0];