plogging: don't error if env var exists, but is empty
plogging: don't error if env var exists, but is empty

juggernate/pymel,shrtcww/pymel,leonsooi/pymel,david-lassonde-adsk/pymel,shrtcww/pymel,assumptionsoup/pymel,AtonLerin/pymel,leonsooi/pymel,david-lassonde-adsk/pymel,AtonLerin/pymel,juggernate/pymel,assumptionsoup/pymel