Errors from python-lsp-server

Hi all

I’ve been happily using python-lsp-server with neovim for some while but the autocomplete has recently stopped working.

In my lsp.log I see lines similar to:

[ERROR][2022-03-24 10:51:35] .../vim/lsp/rpc.lua:420	"rpc"	"pylsp"	"stderr"	"2022-03-24 10:51:35,285 GMT - WARNING - pylsp_jsonrpc.endpoint - Received cancel notification for unknown message id 6\n"
[ERROR][2022-03-24 10:51:37] .../vim/lsp/rpc.lua:420	"rpc"	"pylsp"	"stderr"	"2022-03-24 10:51:37,328 GMT - WARNING - pylsp_jsonrpc.endpoint - Received cancel notification for unknown message id 7\n"

There’s a similar issue on the python-jsonrpc-server repo which suggests the problem might be with the client they use.

I’m on neovim 0.6.1 and v1.4.0 of python-lsp-server.

I’ve also tried downgrading the server to 1.3.3, but it made no difference.

I use lspconfig in my nvim config, but the settings haven’t changed since it all worked fine.

Can anyone help me pinpoint where the problem might lie?