fix

app/Traits/StoresUploads.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Traits;
+
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Str;
+
+trait StoresUploads
+{
+    /**
+     * Store an uploaded file under a random name while preserving its real
+     * extension (from the original filename). Laravel's default store() derives
+     * the extension from the sniffed MIME type, which yields ".bin" for files
+     * that sniff as application/octet-stream (e.g. some valid .mp3 files).
+     */
+    protected function storeUpload(UploadedFile $file, string $folder, string $disk = 'public'): string
+    {
+        $ext = $file->getClientOriginalExtension()
+            ?: ($file->guessExtension() ?: 'bin');
+
+        return $file->storeAs($folder, Str::random(40) . '.' . $ext, $disk);
+    }
+}