Space not permitted in ssh key path (kopiaUI)

Although it bugs me, my Windows account is “John Doe” and my user path is “C:\Users\John Doe”. I haven’t found a way to get KopiaUI to accept C:\Users\John Doe\.ssh\known_hosts , which fails because of the space in the path. I copied my ssk keys to another folder without spaces to make kopiaUI work, but there must be a way with escape characters or simple / double quotes?

FYI I can get kopia cli to work on PowerShell with --keyfile=C:\Users\'John Doe'\.ssh\id_ed25519 (but not with --keyfile='C:\Users\John Doe\.ssh\id_ed25519' )

What format should I use in kopiaUI for it to accept a path with spaces?