Connection errors in plotnft show

What does this mean in the output of “chia plotnft show” ?

Current pool URL: https://xch-de.flexpool.io
Relative lock height: 100 blocks
Exception from 'wallet' <bytes32: snipedxxxxxxxxxxxxxxxxxxxx>
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0xffffa1d3c100>
Unclosed connector
connections: ['[(<aiohttp.client_proto.ResponseHandler object at 0xffffa14b5b20>, 3188001.340563633)]']
connector: <aiohttp.connector.TCPConnector object at 0xffffa1d3c430>