laravel updateOrCreate method

In your use case, you should specify a second parameter. The first indicates the conditions for a match and second is used to specify which fields to update.

$newUser = \App\UserInfo::updateOrCreate([
    //Add unique field combo to match here
    //For example, perhaps you only want one entry per user:
    'user_id'   => Auth::user()->id,
],[
    'about'     => $request->get('about'),
    'sec_email' => $request->get('sec_email'),
    'gender'    => $request->get("gender"),
    'country'   => $request->get('country'),
    'dob'       => $request->get('dob'),
    'address'   => $request->get('address'),
    'mobile'    => $request->get('cell_no')
]);

Here is an example from the documentation: https://laravel.com/docs/5.4/eloquent

// If there's a flight from Oakland to San Diego, set the price to $99.
// If no matching model exists, create one.
$flight = App\Flight::updateOrCreate(
    ['departure' => 'Oakland', 'destination' => 'San Diego'],
    ['price' => 99]
);