[Laravel]calc table column specfic range question - laravel

Question

[UPDATE]
I'm studying number sum at laravel.
I would like to calculate table's columns total amount every month.
I wrote below code and I got this dd result (image)
public function count()
{
Contact::whereYear('created_at', 2021)
->orderBy('created_at')
->get()
->groupBy(function ($row) {
return $row->created_at->format('m');
})
->map(function ($day) {
// dd($day);
return $day->sum('q1a');
});
}
However I only get white blank page at my blade file.
My blade file(count.blade.php) is like this
<h3>{{ $q1a }}</h3>
Could you teach me correct code please?
And one thing When I try to sum I got this error
Warning: A non-numeric value encountered
some of column are not number so I would like to adjust
fix controller code.
WEB.php
//calc total amount page
Route::get('count', 'ContactsController#count');
[UPDATE]
I wrote below code using Dear OMR's answer
public function count()
{
Contact::whereYear('created_at', 2021)
->orderBy('created_at')
->select(['id','sno','s_date', DB::raw("MonthName(created_at)as monthName"), DB::raw('sum(q1a)')])
->groupBy(['id','sno','s_date', 'monthName', 'q1a'])->get();
}
count.blade.php code is below
#foreach ($values as $value)
{{ $value->sumQ }}
#endforeach
Here is current dd result

Answer 1

you can do it in DB stage, witch would be faster:
$values= Contact::whereYear('created_at', 2021)
->orderBy('created_at')
->select(['id','sno','s_date', DB::raw("MonthName(created_at)as monthName"), DB::raw('sum(q1a) as sumQ ')])
->groupBy(['id','sno','s_date', 'monthName'])->get();
note: any column you add it to select statement, should be also added in group by statement.