With sphinx release of 5.0.0, they changed default for language variable to 'en' from None. With that current None valuable is not valid and should not be used. Change-Id: I40b2635eafe8221218010d1c3cd5cf5717bc2800
With sphinx release of 5.0.0, they changed default for language variable to 'en' from None. With that current None valuable is not valid and should not be used. Change-Id: I40b2635eafe8221218010d1c3cd5cf5717bc2800