thanks for tracking it down.
having had a trawl through several sites, this seems to be – in many cases anyway – related to something in the WP gutenberg editor in fact (and perhaps in conjunction with yoast as well)

what version of WP and Yoast do you have installed ? (as i cannot reproduce this here at all )
perhaps you can post your output of wppizza ->tools ->system info too here , so i know what else you are running (make it a private reply if you wish)

only you will know what’s going on.
sounds to me like you’ve been hacked – but maybe you have not been.
as you are not providing a url or in fact anything else to go on, i cannot even begin to guess or comment

>I started getting the following error
so what changed between it not being there and it “starting” to be being there ?

are there also other notices/warnings ?

you are probably/possibly looking for

“Group, sort and display menu items by category” in wppizza->layout

>No the preorder plugin is enable.
that wasn’t quite what I asked, but thanks for the screenshot .
i’ll see if i can reproduce this here with your settings and will post back when i know more

There is no provision for this sort of thing I’m afraid

though if someone wanted to he/she could probably write some sort of plugin based on the documentation provided
adding/removing item from cart etc depending on pickup/delivery selected
https://docs.wp-pizza.com/developers

but it most certainly wont be trivial….

>Is this possible?

only by filtering
https://docs.wp-pizza.com/developers/?section=wppizza-markup-loop-posts-prices-php

ok, I’ve been digging around a bit and I’m not sure if this is even doable having ApplePay payment requests AND the preorder plugin at the same time (other than *redirecting* to stripe where apple pay is integrated automatically anyway)

from what i can see apple (unlike google payrequests!) *requires* that a button gets distinctly clicked before the payment request is being actioned.
which is what

IntegrationError: show() must be called from a user gesture handler

is all about

however, what happens with the preorder plugin is that when someone clicks on “buy now” button (or whatever it will be called) it first of all checks one last time if the selected timeslot is actually still available as someone might have been staying on the order page for ages – and only if this is still a valid timeslot , will the applypay option be triggered automatically.
(same goes for stockmanagement as it happens)

i.e the chain of events is:
click button, script checks timeslot and/or stocklevel availability, if ok show apple pay. (if not ok, show an alert to the effect that timeslot expired, out of stock or whatever is appropriate)

apple seemingly does not allow for this i.e the show() event *must* be triggered directly by clicking on a button and cannot be triggered programatically .

*Maybe* there’s a way around this , but knowing apple I’m not hopeful so cannot really promise anything on that front at the moment I’m afraid… :(

(other than suggesting that if you MUST offer apple pay AND want to use the preorder and/or stockmnagemnt plugin you have to use the default stripe->redirect option)

oh, and the output of “wppizza->tools->system info” as well please

ok, i’ll have to check and will post back here when i know more