so, when I had used tab as indent in Editor bar with outliner theme, it’s worked but I do not seem it effective much cause I think it’s warning me like this:
It looks like you’re inserting blank lines between sections, so they are being treated as multiple outlines, instead of one, continuous one.
Also, the warning about 5-spaces-tabs deals with the tab size, which can be found in the Editor section of settings. There’s a slider that should show you the spaces count for your tabs. I’m using a 4-space tab setting, which is probably the default, and I am not seeing errors.