Distinct laravel not working

$outgoings = Invoice::where('customerID', $id)
                    ->groupBy('invoiceNumber')
                    ->get();
This will work but....

Have to follow this to false strict
https://stackoverflow.com/questions/40917189/laravel-syntax-error-or-access-violation-1055-error

Similar codes

0 vote303 views2 answers
Function() use() php clousure examples
PHP
3 votes300 views2 answers
How to use required_with in laravel to array element
PHP
1 vote288 views1 answer
Aws sdk php
PHP
0 vote369 views1 answer
Use font awesome in laravel 8
PHP Laravel
16 votes314 views3 answers
Laravel request validate
PHP
0 vote311 views1 answer
Check what kind of file was uploaded php
PHP
-1 vote328 views1 answer
Laravel seo
PHP
1 vote388 views2 answers
Displaying variables in blade laravel
PHP Laravel
0 vote314 views1 answer
Laravel custom abort message
PHP
0 vote321 views1 answer
Time zone for php is not set (configuration parameter "date.timezone").
PHP