Lost javascript for vertical tabs integration

There is an error about a lost javascript file:
warning: file_get_contents(sites/all/modules/xmlsitemap/xmlsitemap.js) [function.file-get-contents]: failed to open stream: No such file or directory in /xxxxx/includes/common.inc on line 2400.

In xmlsitemap.admin.inc (line 347):

'#group' => 'additional_settings',
'#attached' => array(
'js' => array(
'vertical-tabs' => drupal_get_path('module', 'xmlsitemap') . '/xmlsitemap.js',
),
),

Or there is a pending xmlistemap.js or we should delete the #attached definition