fix: change models namespace

app/Models/Message.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Message extends Model
+{
+    use SoftDeletes;
+
+    public $fillable = ['title', 'text', 'status', 'recipient_user_id', 'sender_user_id'];
+
+    public function sender_user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'sender_user_id');
+    }
+
+    public function recipient_user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'recipient_user_id');
+    }
+}