debug

app/Models/Project.php

     public function firstListImgUrl(): Attribute
     {
         \Log::info(empty($this->img_url),$this->img_url);
+        \Log::info(Storage::url($this->img_url[0]));
         return Attribute::make(
             get: fn ($value) => !empty($this->img_url) ? Storage::url($this->img_url[0]) : null,
         );