TypeError: Property 'handleEvent' is not callable

[BrainFeeder]

Hi!

I'm getting the error below when using this Pjax in simple html project.
The pages are created with BootstrapStudio (mockup). Pjax has been linked from CDN.

I added listeners on pjax:send and pjax:complete
document.addEventListener('pjax:send', $appContainer.startLoading()); document.addEventListener('pjax:complete', $appContainer.stopLoading());
Called functions will just add/remove class .loading to/from body.

Seems like the events do trigger on page load.

When I click a link, pjax:send triggers:

TypeError: Property 'handleEvent' is not callable.pjax.js:419:10
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:419
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:459
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:411
forEach self-hosted:235
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:400
loadUrl https://cdn.jsdelivr.net/npm/pjax/pjax.js:186
linkAction https://cdn.jsdelivr.net/npm/pjax/pjax.js:718
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:769

pjax:complete triggers:

TypeError: Property 'handleEvent' is not callable.pjax.js:419:10
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:419
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:459
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:411
forEach self-hosted:235
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:400
afterAllSwitches https://cdn.jsdelivr.net/npm/pjax/pjax.js:252
onSwitch https://cdn.jsdelivr.net/npm/pjax/pjax.js:116
outerHTML https://cdn.jsdelivr.net/npm/pjax/pjax.js:1048
bind_applyFunctionN self-hosted:1054
outerHTML self-hosted:1018
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:1038
forEach self-hosted:235
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:1037
self-hosted:886
switchSelectors https://cdn.jsdelivr.net/npm/pjax/pjax.js:95
loadContent https://cdn.jsdelivr.net/npm/pjax/pjax.js:166
exports https://cdn.jsdelivr.net/npm/pjax/pjax.js:841
self-hosted:882
onreadystatechange https://cdn.jsdelivr.net/npm/pjax/pjax.js:910