Undefined variables

[ivomarino]

Hi all, I'm having some issues when Toggling a session, I get this errors, any Ideas? Latest Vim 8 here, thanks:

Error detected while processing function <SNR>40_ToggleWorkspace[2]..<SNR>40_RemoveWorkspace[4]..<SNR>40_SetAutosave:
|line   24:
|E121: Undefined variable: s:autoread
|line   25:
|E121: Undefined variable: s:autowriteall
|line   26:
|E121: Undefined variable: s:updatetime
|line   27:
|E121: Undefined variable: s:swapfile
|line   29:
|E121: Undefined variable: s:swapsync
|line   31:
|E216: No such group or event: WorkspaceToggle * *