SFTP with privatekey java8.nio.file.FileSystemException on:/path net.schmizz.ssh......

I have an SFTP server on a wireguard vpn. I can access the server through multiple different clients using my privatekey-publickey pair without any issue (linux desktop, other android sftp apps, etc). I can also technically access the server on MarterialFiles as well, however on connection I receive a multiple spamming of error notifications of java8.nio.file.FileSystemException on:/path net.schmizz.ssh... as a popup on the bottom of the screen, in which the error gets cut off from view. Attempting to download or upload any files to this server results in this message popping up and a failure of whatever task I was attempting (ie the file is not downloaded, or uploaded a small chunk of the file if any). I would provide logs except I cannot find any for this app. functionality of the SFTP server is nominal on any other platform except MaterialFiles.

No source file, test, or entry point is named. First reproduce an SFTP private-key upload and download over the WireGuard VPN on Android while capturing the complete FileSystemException; done means transfers succeed without repeated truncated error notifications.