> - Following text appears in the minibuffer area: `[eglot] Server
> reports (type=1): Unknown method textDocument/didSave`
Without actually looking into the details, this feels similar to an
earlier issue, which I unfortunately closed:
https://github.com/joaotavora/eglot/issues/360
The commit referenced in #360 only fixed the willSave part. I guess the
solution to this bug report should be probably similar to that fix:
Eglot should check (eglot--server-capable :textDocumentSync :save)
before sending a textDocument/didSave.