Drupal Error Log

User notice:
ServicesException::__set_state(array(
   'data' => 'Line 1, Col 1: Start tag expected, '<' not found


',
   'message' => 'Line 1, Col 1: Start tag expected, '<' not found


',
   'string' => '',
   'code' => 406,
   'file' => '/var/www/langator/sites/all/modules/services/services.runtime.inc',
   'line' => 355,
   'trace' =>
  array (
    0 =>
    array (
      'file' => '/var/www/langator/sites/all/modules/services/servers/rest_server/includes/RESTServer.inc',
      'line' => 489,
      'function' => 'services_error',
      'args' =>
      array (
        0 => 'Line 1, Col 1: Start tag expected, '<' not found


',
        1 => 406,
      ),
    ),
    1 =>
    array (
      'function' => 'parseXML',
      'class' => 'RESTServer',
      'type' => '->',
      'args' =>
      array (
        0 => NULL,
      ),
    ),
    2 =>
    array (
      'file' => '/var/www/langator/sites/all/modules/services/servers/rest_server/includes/RESTServer.inc',
      'line' => 282,
      'function' => 'call_user_func',
      'args' =>
      array (
        0 => 'RESTServer::parseXML',
        1 => NULL,
      ),
    ),
    3 =>
    array (
      'file' => '/var/www/langator/sites/all/modules/services/servers/rest_server/includes/RESTServer.inc',
      'line' => 189,
      'function' => 'parseRequest',
      'class' => 'RESTServer',
      'type' => '->',
      'args' =>
      array (
        0 => 'POST',
        1 =>
        array (
          'file' =>
          array (
            'type' => 'inc',
            'module' => 'services',
            'name' => 'resources/file_resource',
          ),
          'help' => 'Creates a file with base64 encoded data',
          'callback' => '_file_resource_create',
          'access callback' => '_file_resource_access',
          'access arguments' =>
          array (
            0 => 'create',
          ),
          'access arguments append' => true,
          'args' =>
          array (
            0 =>
            array (
              'name' => 'file',
              'type' => 'array',
              'description' => 'An array representing a file.',
              'source' => 'data',
              'optional' => false,
            ),
          ),
          'endpoint' =>
          array (
          ),
        ),
      ),
    ),
    4 =>
    array (
      'file' => '/var/www/langator/sites/all/modules/services/servers/rest_server/includes/RESTServer.inc',
      'line' => 86,
      'function' => 'getControllerArguments',
      'class' => 'RESTServer',
      'type' => '->',
      'args' =>
      array (
        0 =>
        array (
          'file' =>
          array (
            'type' => 'inc',
            'module' => 'services',
            'name' => 'resources/file_resource',
          ),
          'help' => 'Creates a file with base64 encoded data',
          'callback' => '_file_resource_create',
          'access callback' => '_file_resource_access',
          'access arguments' =>
          array (
            0 => 'create',
          ),
          'access arguments append' => true,
          'args' =>
          array (
            0 =>
            array (
              'name' => 'file',
              'type' => 'array',
              'description' => 'An array representing a file.',
              'source' => 'data',
              'optional' => false,
            ),
          ),
          'endpoint' =>
          array (
          ),
        ),
        1 =>
        array (
        ),
        2 => 'POST',
      ),
    ),
    5 =>
    array (
      'file' => '/var/www/langator/sites/all/modules/services/servers/rest_server/rest_server.module',
      'line' => 34,
      'function' => 'handle',
      'class' => 'RESTServer',
      'type' => '->',
      'args' =>
      array (
        0 => 'file.json',
        1 => 'server',
      ),
    ),
    6 =>
    array (
      'function' => 'rest_server_server',
      'args' =>
      array (
      ),
    ),
    7 =>
    array (
      'file' => '/var/www/langator/sites/all/modules/services/services.module',
      'line' => 204,
      'function' => 'call_user_func',
      'args' =>
      array (
        0 => 'rest_server_server',
      ),
    ),
    8 =>
    array (
      'function' => 'services_endpoint_callback',
      'args' =>
      array (
        0 => 'langator_serve',
        1 => 'file.json',
      ),
    ),
    9 =>
    array (
      'file' => '/var/www/langator/includes/menu.inc',
      'line' => 517,
      'function' => 'call_user_func_array',
      'args' =>
      array (
        0 => 'services_endpoint_callback',
        1 =>
        array (
          0 => 'langator_serve',
          1 => 'file.json',
        ),
      ),
    ),
    10 =>
    array (
      'file' => '/var/www/langator/index.php',
      'line' => 21,
      'function' => 'menu_execute_active_handler',
      'args' =>
      array (
      ),
    ),
  ),
   'previous' => NULL,
))
in RESTServer->handleException() (line 735 of /var/www/langator/sites/all/modules/services/servers/rest_server/includes/RESTServer.inc).