Fix type milestone

app/Http/Controllers/ActivityController.php

@@ -216,7 +216,9 @@ class ActivityController extends Controller
 		$data['created_by'] = $this->currentName;
 		$max = Activity::where('version_gantt_id', $request->version_gantt_id)->max('sortorder');
 		$data['sortorder'] = $max + 1;
+		if (!isset($data['type_activity'])) {
 			$data['type_activity'] = "task";
+		}
 
 		$parent = $data['parent_id'] ?? null;
 		if ($parent) {