Hi
At jetpack/modules/minileven/theme/pub/minileven/header.php at line 32 the call to array_shift() expects a reference (giving an error writ large on mobile web sites) when passed array_values().
An easy fix is just to move the call to array_values() to a temporary variable before the call and pass the variable:
ie:
PROBLEM:
$menu_id = array_shift( array_values( $location ) ); // access the ID of the...etc...
SOLUTION:
$locs = array_values( $location );
$menu_id = array_shift( $locs ); // access the ID of the...etc...
Regards
Phil Basker