下载文件报错

[FrankLove]

库版本1.7.7
下载服务器用的hfs 在本地电脑上开的站点，下载报错，这是为什么吗？
java.net.SocketException: Connection failed with request[{If-Match=[95A8B15FF8BA33D30AE21C9AC2CBDFC3], Range=[bytes=10195214-], User-Agent=[FileDownloader/1.7.7]}] response[{null=[HTTP/1.1 503 �����޷���ȡ], Accept-Ranges=[bytes], Content-Type=[text/html], ETag=[95A8B15FF8BA33D30AE21C9AC2CBDFC3], Last-Modified=[Thu, 08 Aug 2024 03:43:47 GMT], Server=[HFS 2.4rc2], Set-Cookie=[HFS_SID_=0.095283466624096; path=/; HttpOnly], X-Android-Received-Millis=[1723110802032], X-Android-Response-Source=[NETWORK 503], X-Android-Selected-Protocol=[http/1.1], X-Android-Sent-Millis=[1723110801957]}] http-state[503] on task[2098549956-2], which is changed after verify connection, so please try again.