There are currently no widgets assigned to the left-sidebar, place some!
Once you add widgets to this sidebar, this default information will go away.
Widgets can be added by going to your dashboard (wp-admin) -> Appearance -> Widgets, drag a widget you want to see into one of the appropriate sidebars.
I sometimes use “SON OF A WEASEL”… not as of offensive, unless it’s offensive to weasels…
Weasels would hate that!
TJ