There isn't any video of the allege contravention on the WF website. Can you please tell us if it was a left or a right turn into the restricted street.
Any reason at all for the wrong turn, on what one would think is so regular as to be an "autopilot" journey ?
Here is a view of the road junction concerned.The signs are covered over, which indicates either that the restriction had yet to be implemented, (needed TRO), or it was not term time, so the council have put in signs with cover plates that can be opened to reveal the restriction :-
https://maps.app.goo.gl/MFevAJejTmBRqhhv6The PCN photo shows your car driving into the restriction with the school sign. There is not advance signage on the "free" approaches, but if one drives head-on past a restriction sign, it is difficult to convince an adjudicator one didn't see the sign.