Fixed type issue.

src/Uploads/UploadsData.php

@@ -172,7 +172,7 @@ class UploadsData {
         $secret ??= XString::random(4);
 
         $stmt = $this->cache->get('INSERT INTO prm_uploads (upload_id, pool_id, user_id, upload_secret, upload_name, upload_ip, upload_created) VALUES (?, ?, ?, ?, ?, INET6_ATON(?), FROM_UNIXTIME(?))');
-        $stmt->nextParameter($uploadId);
+        $stmt->nextParameter((string)$uploadId);
         $stmt->nextParameter($poolInfo instanceof PoolInfo ? $poolInfo->id : $poolInfo);
         $stmt->nextParameter($userId);
         $stmt->nextParameter($secret);