Lost Connection - Can't get attributes of file

Hello, when using WinSCP v6.1.1, I try to open a .toml file for editing a config on a Minecraft server and it loses connection. I also tried another file server.properties and had the same error. I've tried double clicking to open, using the right click Open option, and also trying multiple different editors via Edit including the internal editor. All have the same issue.

Can you open other files? Can you post session log file for the problem (and if you can open other files, please include that into the log too).