errors with jetpack-carousel

We were using the Jetpack Carousel module, but recently it came to our attention that you could no longer view images with it. Clicking on an image in the gallery would bring up the lightbox interface, but with no content loaded and unresponsive interface (you can’t even get out of the lightbox by clicking the X).

Jetpack v9.8
Wordpress v5.7.2
PHP v7.3.28

The problem appears in both Chrome and Safari. We haven’t tested other browsers.

The following javascript errors appear in the Chrome console:

jetpack-carousel.min.js?ver=9.8:3 Uncaught ReferenceError: wpcom is not defined
at HTMLImageElement.<anonymous> (jetpack-carousel.min.js?ver=9.8:3)
at Function.each (jquery.min.js?ver=3.5.1:2)
at s.fn.init.each (jquery.min.js?ver=3.5.1:2)
at V (jetpack-carousel.min.js?ver=9.8:3)
at HTMLDivElement.<anonymous> (jetpack-carousel.min.js?ver=9.8:3)
at HTMLDivElement.r.complete (jquery.min.js?ver=3.5.1:2)
at c (jquery.min.js?ver=3.5.1:2)
at Object.fireWith [as resolveWith] (jquery.min.js?ver=3.5.1:2)
at u (jquery.min.js?ver=3.5.1:2)
at Function.S.fx.tick (jquery.min.js?ver=3.5.1:2)
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
each @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
V @ jetpack-carousel.min.js?ver=9.8:3
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
r.complete @ jquery.min.js?ver=3.5.1:2
c @ jquery.min.js?ver=3.5.1:2
fireWith @ jquery.min.js?ver=3.5.1:2
u @ jquery.min.js?ver=3.5.1:2
S.fx.tick @ jquery.min.js?ver=3.5.1:2
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
S.fx.start @ jquery.min.js?ver=3.5.1:2
S.fx.timer @ jquery.min.js?ver=3.5.1:2
ft @ jquery.min.js?ver=3.5.1:2
a @ jquery.min.js?ver=3.5.1:2
dequeue @ jquery.min.js?ver=3.5.1:2
(anonymous) @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
queue @ jquery.min.js?ver=3.5.1:2
animate @ jquery.min.js?ver=3.5.1:2
S.fn.<computed> @ jquery.min.js?ver=3.5.1:2
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
each @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
Z @ jetpack-carousel.min.js?ver=9.8:3
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
dispatch @ jquery.min.js?ver=3.5.1:2
v.handle @ jquery.min.js?ver=3.5.1:2
jetpack-carousel.min.js?ver=9.8:3 Uncaught TypeError: Cannot read property ‘split’ of undefined
at jetpack-carousel.min.js?ver=9.8:3
at q (jetpack-carousel.min.js?ver=9.8:3)
at R (jetpack-carousel.min.js?ver=9.8:3)
at jetpack-carousel.min.js?ver=9.8:3
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
q @ jetpack-carousel.min.js?ver=9.8:3
R @ jetpack-carousel.min.js?ver=9.8:3
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
setTimeout (async)
C @ jetpack-carousel.min.js?ver=9.8:3
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
dispatch @ jquery.min.js?ver=3.5.1:2
v.handle @ jquery.min.js?ver=3.5.1:2
trigger @ jquery.min.js?ver=3.5.1:2
(anonymous) @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
trigger @ jquery.min.js?ver=3.5.1:2
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
r.complete @ jquery.min.js?ver=3.5.1:2
c @ jquery.min.js?ver=3.5.1:2
fireWith @ jquery.min.js?ver=3.5.1:2
u @ jquery.min.js?ver=3.5.1:2
S.fx.tick @ jquery.min.js?ver=3.5.1:2
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
requestAnimationFrame (async)
st @ jquery.min.js?ver=3.5.1:2
S.fx.start @ jquery.min.js?ver=3.5.1:2
S.fx.timer @ jquery.min.js?ver=3.5.1:2
ft @ jquery.min.js?ver=3.5.1:2
a @ jquery.min.js?ver=3.5.1:2
dequeue @ jquery.min.js?ver=3.5.1:2
(anonymous) @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
queue @ jquery.min.js?ver=3.5.1:2
animate @ jquery.min.js?ver=3.5.1:2
S.fn.<computed> @ jquery.min.js?ver=3.5.1:2
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
each @ jquery.min.js?ver=3.5.1:2
each @ jquery.min.js?ver=3.5.1:2
Z @ jetpack-carousel.min.js?ver=9.8:3
(anonymous) @ jetpack-carousel.min.js?ver=9.8:3
dispatch @ jquery.min.js?ver=3.5.1:2
v.handle @ jquery.min.js?ver=3.5.1:2

Disabling the carousel module allows the images to be loaded without errors, but we also lose the functionality that is the whole reason we installed Jetpack in the first place!

The page I need help with: [log in to see the link]