Laravel create PDF syntax error, unexpected '->' (T_OBJECT_OPERATOR)

When I open in Laravel link to create a PDF I got this error:

syntax error, unexpected '->' (T_OBJECT_OPERATOR)

Here is a snippet of the code that laravel highlight:

$customer_data = kunden::find($id);
 ->where('id', '=', $id)
 ->first();

via Chebli Mohamed