installed BTCPay from the app store, but btcpay-server_nbxplorer_1 docker logs show this:
btcpay-server_nbxplorer_1 | fail: NBXplorer.Indexer.BTC: Unhandled exception in the indexer, retrying in 60 seconds
btcpay-server_nbxplorer_1 | System.InvalidOperationException: The node is not in a connected state
btcpay-server_nbxplorer_1 | at NBitcoin.Protocol.NodeListener.ReceivePayload[TPayload](CancellationToken cancellationToken)
btcpay-server_nbxplorer_1 | at NBitcoin.Protocol.Node.VersionHandshake(NodeRequirement requirements, CancellationToken cancellationToken)
btcpay-server_nbxplorer_1 | at NBXplorer.Backend.Indexer.ConnectNode(CancellationToken token) in /source/NBXplorer/Backend/Indexer.cs:line 302
btcpay-server_nbxplorer_1 | at NBXplorer.Backend.Indexer.IndexerLoopCore(CancellationToken token) in /source/NBXplorer/Backend/Indexer.cs:line 147
btcpay-server_nbxplorer_1 | at NBXplorer.Backend.Indexer.IndexerLoop() in /source/NBXplorer/Backend/Indexer.cs:line 96