diff -u b/core/profiles/demo_umami/modules/demo_umami_content/src/InstallHelper.php b/core/profiles/demo_umami/modules/demo_umami_content/src/InstallHelper.php
--- b/core/profiles/demo_umami/modules/demo_umami_content/src/InstallHelper.php
+++ b/core/profiles/demo_umami/modules/demo_umami_content/src/InstallHelper.php
@@ -667,7 +667,7 @@
     $filename = $entity_type . '/' . $ct_machine_name . '.csv';
 
     // Read all multilingual content from the file.
-    [$all_content, $translated_languages] = $this->readMultilingualContent($filename);
+    list($all_content, $translated_languages) = $this->readMultilingualContent($filename);
 
     // English is no longer needed in the list of languages to translate.
     $key = array_search('en', $translated_languages);