Error Exception: Indirect modification of overloaded property laravel - laravel

Question

I'm making an API that store a new version of an application. Here is my code:
public function saveNewVersion() {
$artifact_url = Input::get('url');
$artifact_id = Input::get('id');
$artifact_name = Input::get('name');
$artifact_version = Input::get('version');
$urls = explode('/', $artifact_url);
//Exploding URL to dir
$app_dir = "";
for($i=5; $i<sizeof($urls); $i++)
$app_dir .= $urls[$i] . '/';
$app_dir .= $artifact_id;
//Checking if the artifact_id exists in the database
$app = Applications::where('app_dir', '=', $app_dir);
if (!$app->count()) {
//Save it as new application
$new_app = new Applications();
$new_app->application->name = $artifact_name;
$new_app->app_dir = $app_dir;
$new_app->save();
$app_id = Applications::where('app_dir', '=', $app_dir)->first()->id;
} else {
$app_id = $app->first()->id;
//Checking if the application name is not same as newrelic (Optional)
if ($app->first()->application_name != $artifact_name) {
$app = $app->first();
$app->application_name = $artifact_name;
$app->save();
}
}
//check if the last version exists in the database
$version = Versions::where('application_id', '=', $app_id)->orderBy('id', 'desc');
$lastVersion = $version->first()->version_number;
if ($lastVersion != $artifact_version) {
//check if the new version is exists before
$flag = 0;
$versions = Versions::where('application_id', '=', $app_id)->orderBy('id', 'desc')->get();
foreach ($versions as $item) {
if ($item->version_number == $artifact_version) {
$flag = 1;
break;
}
}
if (!$flag) {
$version = new Versions();
$version->application_id = $app_id;
$version->version_number = $artifact_version;
$version->save();
echo 'Application' . $app_id . 'has been updated to version ' . $artifact_version;
}
}
}
When I call the API using postman, the API runs successfully and stores the new version of the application. But when I'm using CURL. I got ErrorException: Indirect modification of overloaded property App\Applications::$application and it points to my $new_app->save() code.
Is there any problem with my code ? Or are there some parameters used in postman that make this error invisible ?

Answer 1

I may be wrong here but it looks like the issue is the issue is here:
$new_app->application->name = $artifact_name;
I think it should be:
$new_app->application_name = $artifact_name;
based on the other code.