saving back to textbox after change filesystem to file

[elig0n]

When i edit a textbox with wasavi 0.7.737 the default filesystem (from status) is dropbox although I don't have it configured yet when I :wq the text is saved to the textbox. If I choose another remote default filesystem via :filesystem default gdrive for example and then do :w then it will then open a new tab to authorize it. But if I type :filesystem default file and then type :w filename then I see 'could not establish connection' but then if I want to 'save' back to the original textbox (with a simple :w or changing filesystem to the others) it shows the same 'could not establish connection' error. And so only:q!` can quit wasavi.