--- /src/Form/ContentImport.php
+++ /src/Form/ContentImport_orig.php
@@ -243,7 +243,7 @@
             array_push($fieldNames, 'langcode');
             array_push($fieldTypes, 'lang');
             
-            if(!isset($data['langcode'])) {
+            if (array_search('langcode',$data) === FALSE) {
               $logVariationFields .= "Langcode missing --- Assuming EN as default langcode.. Import continues  \n \n";
               $data[count($data)] = 'langcode';
             }