Seems to happen consistently. The log has a more detailed entry this morning.
17-3-23 16:55:02.7|Error|QBittorrent|NzbDrone.Core.Download.Clients.DownloadClientException: Failed to connect to qBitTorrent, please check your settings. —> System.Net.WebException: Unable to connect to the remote server —> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.0.122:8080
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
— End of inner exception stack trace —
at System.Net.HttpWebRequest.GetResponse()
at NzbDrone.Common.Http.Dispatchers.ManagedHttpDispatcher.GetResponse(HttpRequest request, CookieContainer cookies) in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Common\Http\Dispatchers\ManagedHttpDispatcher.cs:line 76
at NzbDrone.Common.Http.Dispatchers.FallbackHttpDispatcher.GetResponse(HttpRequest request, CookieContainer cookies) in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Common\Http\Dispatchers\FallbackHttpDispatcher.cs:line 60
at NzbDrone.Common.Http.HttpClient.Execute(HttpRequest request) in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Common\Http\HttpClient.cs:line 70
at NzbDrone.Core.Download.Clients.QBittorrent.QBittorrentProxy.ProcessRequest[TResult](HttpRequestBuilder requestBuilder, QBittorrentSettings settings) in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Download\Clients\QBittorrent\QBittorrentProxy.cs:line 163
— End of inner exception stack trace —
at NzbDrone.Core.Download.Clients.QBittorrent.QBittorrentProxy.ProcessRequest[TResult](HttpRequestBuilder requestBuilder, QBittorrentSettings settings) in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Download\Clients\QBittorrent\QBittorrentProxy.cs:line 184
at NzbDrone.Core.Download.Clients.QBittorrent.QBittorrentProxy.GetConfig(QBittorrentSettings settings) in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Download\Clients\QBittorrent\QBittorrentProxy.cs:line 53
at NzbDrone.Core.Download.Clients.QBittorrent.QBittorrent.GetItems() in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Download\Clients\QBittorrent\QBittorrent.cs:line 83