0👍
Basically you want to customize your errorbag right ? try this one out. Add this inside your fail condition. Let me know if it works.
$err = [{imei:xxxx,errorMsg: 'already exist in DB'}];
foreach ($validator->errors()->toArray() as $error) {
foreach($error as $sub_error) {
array_push($err, $sub_error);
}
}
return ['errors'=>$err];
Source:stackexchange.com