Fatal error with latest webtrees 2.1 code

[ddrury]

At webtrees commit fisharebest/webtrees@3faaf00

Get error message Uncaught TypeError: $(...).on(...).on(...).collapse is not a function

// Handle special case with option toggler (works only with jquery)
$("#showMoreOptions")
    .on("shown.bs.collapse", function () {
        storage.write("showMoreOptions", true);
    })
    .on("hidden.bs.collapse", function () {
        storage.write("showMoreOptions", false);
    })
    .collapse(
        storage.read("showMoreOptions") ? "show" : "hide"
    );

[ddrury]

It's the upgrade to bootstrap 5 that I think causes the problem. (not using jQuery)