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Since ALWAYS i used to load the circuitikz package with:

\usepackage[siunitx]{circuitikz}

I formated my PC and reinstalled THE SAME MikTeX, GhostScript, GSview and TeXMaker versions, but when i try to do the same TeXMaker drop this alert:

!LaTeX Error: File `l3backend-pdfmode.def' not found.

Anyone know how to solve it?