diff --git a/src/Plugin/views/style/TikiTokiJson.php b/src/Plugin/views/style/TikiTokiJson.php
index 51c877f..1018d11 100644
--- a/src/Plugin/views/style/TikiTokiJson.php
+++ b/src/Plugin/views/style/TikiTokiJson.php
@@ -137,7 +137,7 @@ class TikiTokiJson extends StylePluginBase implements CacheableDependencyInterfa
     $column = 'value';
     $definition = \Drupal::service('entity_field.manager')
       ->getFieldStorageDefinitions('taxonomy_term')[$field_name];
-    if ($definition instanceof FieldStorageConfig) {
+    if (isset($definition) && $definition instanceof FieldStorageConfig) {
       if ($definition->getType() == 'color_field_type') {
         $column = 'color';
       }