Hi there. Recently my Papyrus log has started reading this warning:

warning: Property pTG05KarliahInvisibilitySpell on script QF_TG05_00021551 attached to TG05 (00021551) cannot be initialized because the script no longer contains that property

I found this after official upgrading 1.9 and updating to USKP 1.3.1

My only mods for the moment being are:
USKP
Better Skill and Book Names
BLESSINGS Altar Descriptions
Dungeon Quest Awareness
SkyIU
iHUD

No other mods have been uninstalled in my save
I′d like to know how dangerous this can be for the integrity of my save and if there′s any solution for it. Any advice would be greatly appreciated