If you were using my Skype for Business recipes, I overhauled them about three days ago. The new one is here:

https://github.com/autopkg/rtrouton-recipes/blob/master/JSS/MicrosoftSkypeForBusiness365.jss.recipe

Still have the issue when I say "Run Recipes Now" but not if I select them all and use the control-click "Run Selected Recipes".
I don't see anything to clear in my folder:

$ cd ~/Library/AutoPkg
$ ls -1 /usi*
RecipeOverrides/MicrosoftSkypeForBusiness365.pkg.recipe

Cache/com.github.rtrouton.jss.skypeforbusiness365:
Microsoft_Skype_For_Business_16.23.64.pkg
downloads
receipts

Cache/local.pkg.MicrosoftSkypeForBusiness365:
Microsoft_Skype_For_Business_16.23.64.pkg
downloads
receipts

Here we go:

$ fgrep usi ~/Library/Application Support/AutoPkgr/recipe_list.txt
local.pkg.MicrosoftSkypeForBusiness365
local.jss.SkypeForBusiness

So there should have been something to clean that out.

So it runs successfully now but it says it is doing 14 when I've only got 13.