Prevent fatal error on wrong delimiter

Author: thomas-kl1

Model/Import/FromCsv.php

@@ -16,6 +16,7 @@
 use function array_combine;
 use function array_map;
 use function array_shift;
+use function count;
 
 class FromCsv
 {
@@ -43,6 +44,11 @@ public function execute(string $filePath, Options $options): void
 
         $data = [];
         foreach ($rows as $row) {
+            if ($keysCount !== count($row)) {
+                throw new InputException(
+                    new Phrase('The number of column does not match the keys. Please verify the field separator.')
+                );
+            }
             $data[] = array_combine($keys, $row);
         }